CVE-2023-53481

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53481", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-01T11:39:39.402Z", "datePublished": "2025-10-01T11:42:49.825Z", "dateUpdated": "2026-10-15T21:41:28.594Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:14:17.891Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed\n\nFollowing process will trigger an infinite loop in ubi_wl_put_peb():\n\n\tubifs_bgt\t\tubi_bgt\nubifs_leb_unmap\n ubi_leb_unmap\n ubi_eba_unmap_leb\n ubi_wl_put_peb\twear_leveling_worker\n e1 = rb_entry(rb_first(&ubi->used)\n\t\t\t e2 = get_peb_for_wl(ubi)\n\t\t\t ubi_io_read_vid_hdr // return err (flash fault)\n\t\t\t out_error:\n\t\t\t ubi->move_from = ubi->move_to = NULL\n\t\t\t wl_entry_destroy(ubi, e1)\n\t\t\t ubi->lookuptbl[e->pnum] = NULL\n retry:\n e = ubi->lookuptbl[pnum];\t// return NULL\n\tif (e == ubi->move_from) {\t// NULL == NULL gets true\n\t goto retry;\t\t\t// infinite loop !!!\n\n$ top\n PID USER PR NI VIRT RES SHR S %CPU %MEM COMMAND\n 7676 root 20 0 0 0 0 R 100.0 0.0 ubifs_bgt0_0\n\nFix it by:\n 1) Letting ubi_wl_put_peb() returns directly if wearl leveling entry has\n been removed from 'ubi->lookuptbl'.\n 2) Using 'ubi->wl_lock' protecting wl entry deletion to preventing an\n use-after-free problem for wl entry in ubi_wl_put_peb().\n\nFetch a reproducer in [Link]."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is reached only from local activity \u2014 file writes/unlinks on a mounted UBIFS filesystem driving `ubifs_leb_unmap()`, or `UBI_IOCEBER`/`UBI_IOCEBUNMAP` ioctls on `/dev/ubiX_Y`. There is no network-facing consumer of the UBI wear-leveling layer.\nAC:L - The attacker supplies both the concurrency (unbounded parallel LEB unmaps via ordinary filesystem writes/deletes or a tight ioctl loop) and sustained write pressure that keeps the wear-leveling worker running continuously on flash whose read/ECC errors are the expected operating condition UBI is built to handle; once the error path fires, the `NULL == ubi->move_from` comparison is deterministic, not probabilistic.\nPR:L - Any unprivileged local user with write access to a UBIFS mount (the standard writable data/rootfs partition on embedded, automotive and IoT devices) can drive `ubi_eba_unmap_leb()` through the UBIFS journal and background thread; the direct ioctl path has no capability check either, only `FMODE_WRITE` on the volume node.\nUI:N - Exploitation needs only the attacker's own file I/O or ioctls against an already-mounted UBI/UBIFS volume; no victim action, mount of attacker-supplied media, or administrator interaction is required.\nS:U - The hang and the freed-slab-object corruption are confined to the kernel's own security authority on the affected host, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The use-after-free on the `ubi_wl_entry_slab` object lets the attacker read fields (`e->pnum`, `e->ec`, rbtree links) out of memory that has been freed and can be reallocated with attacker-groomed content, giving a path to kernel memory disclosure.\nI:H - `rb_erase(&e->u.rb, &ubi->used)` and the subsequent `schedule_erase()` operate on the freed entry, writing rbtree pointer values through a dangling object and re-queuing it \u2014 a classic UAF write primitive usable for heap corruption and control-flow hijack.\nA:H - The `goto retry` loop never terminates, pinning a CPU at 100% in an unkillable kernel thread while holding `ubi->fm_protect` and the LEB write lock, which permanently hangs all I/O to the UBI device and its UBIFS filesystems until reboot; the concurrent UAF independently causes kernel crashes."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mtd/ubi/wl.c"], "versions": [{"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "b40d2fbf47af58377e898b5062077a47bb28a132", "status": "affected", "versionType": "git"}, {"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "f006f596fe851c3b6aae60b79f89f89f0e515d2f", "status": "affected", "versionType": "git"}, {"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "b5be23f6ae610bdb262160a1f294afee6d0e6a69", "status": "affected", "versionType": "git"}, {"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "8a18856e074479bd050b01e688c58defadce7ab0", "status": "affected", "versionType": "git"}, {"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "3afaaf6f5867dc4ad383808d4053f428ec7b867d", "status": "affected", "versionType": "git"}, {"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "cc4bc532acda66189bddc03b3fe1ad689d9a48a2", "status": "affected", "versionType": "git"}, {"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "5af1c643184a5d09ff5b3f334077a4d0a163c677", "status": "affected", "versionType": "git"}, {"version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "4d57a7333e26040f2b583983e1970d9d460e56b0", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mtd/ubi/wl.c"], "versions": [{"version": "2.6.25", "status": "affected"}, {"version": "0", "lessThan": "2.6.25", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.308", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.276", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.235", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.173", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.100", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.18", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.5", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "4.14.308"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "4.19.276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.4.235"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.10.173"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.15.100"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.1.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.2.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b40d2fbf47af58377e898b5062077a47bb28a132"}, {"url": "https://git.kernel.org/stable/c/f006f596fe851c3b6aae60b79f89f89f0e515d2f"}, {"url": "https://git.kernel.org/stable/c/b5be23f6ae610bdb262160a1f294afee6d0e6a69"}, {"url": "https://git.kernel.org/stable/c/8a18856e074479bd050b01e688c58defadce7ab0"}, {"url": "https://git.kernel.org/stable/c/3afaaf6f5867dc4ad383808d4053f428ec7b867d"}, {"url": "https://git.kernel.org/stable/c/cc4bc532acda66189bddc03b3fe1ad689d9a48a2"}, {"url": "https://git.kernel.org/stable/c/5af1c643184a5d09ff5b3f334077a4d0a163c677"}, {"url": "https://git.kernel.org/stable/c/4d57a7333e26040f2b583983e1970d9d460e56b0"}], "title": "ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-53481", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:34:44.820023Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:41:28.594Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-53481", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:34:44.820023Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:34:45.818Z"}}], "cna": {"title": "ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is reached only from local activity \u2014 file writes/unlinks on a mounted UBIFS filesystem driving `ubifs_leb_unmap()`, or `UBI_IOCEBER`/`UBI_IOCEBUNMAP` ioctls on `/dev/ubiX_Y`. There is no network-facing consumer of the UBI wear-leveling layer.\nAC:L - The attacker supplies both the concurrency (unbounded parallel LEB unmaps via ordinary filesystem writes/deletes or a tight ioctl loop) and sustained write pressure that keeps the wear-leveling worker running continuously on flash whose read/ECC errors are the expected operating condition UBI is built to handle; once the error path fires, the `NULL == ubi->move_from` comparison is deterministic, not probabilistic.\nPR:L - Any unprivileged local user with write access to a UBIFS mount (the standard writable data/rootfs partition on embedded, automotive and IoT devices) can drive `ubi_eba_unmap_leb()` through the UBIFS journal and background thread; the direct ioctl path has no capability check either, only `FMODE_WRITE` on the volume node.\nUI:N - Exploitation needs only the attacker's own file I/O or ioctls against an already-mounted UBI/UBIFS volume; no victim action, mount of attacker-supplied media, or administrator interaction is required.\nS:U - The hang and the freed-slab-object corruption are confined to the kernel's own security authority on the affected host, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The use-after-free on the `ubi_wl_entry_slab` object lets the attacker read fields (`e->pnum`, `e->ec`, rbtree links) out of memory that has been freed and can be reallocated with attacker-groomed content, giving a path to kernel memory disclosure.\nI:H - `rb_erase(&e->u.rb, &ubi->used)` and the subsequent `schedule_erase()` operate on the freed entry, writing rbtree pointer values through a dangling object and re-queuing it \u2014 a classic UAF write primitive usable for heap corruption and control-flow hijack.\nA:H - The `goto retry` loop never terminates, pinning a CPU at 100% in an unkillable kernel thread while holding `ubi->fm_protect` and the LEB write lock, which permanently hangs all I/O to the UBI device and its UBIFS filesystems until reboot; the concurrent UAF independently causes kernel crashes."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "b40d2fbf47af58377e898b5062077a47bb28a132", "versionType": "git"}, {"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "f006f596fe851c3b6aae60b79f89f89f0e515d2f", "versionType": "git"}, {"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "b5be23f6ae610bdb262160a1f294afee6d0e6a69", "versionType": "git"}, {"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "8a18856e074479bd050b01e688c58defadce7ab0", "versionType": "git"}, {"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "3afaaf6f5867dc4ad383808d4053f428ec7b867d", "versionType": "git"}, {"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "cc4bc532acda66189bddc03b3fe1ad689d9a48a2", "versionType": "git"}, {"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "5af1c643184a5d09ff5b3f334077a4d0a163c677", "versionType": "git"}, {"status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "lessThan": "4d57a7333e26040f2b583983e1970d9d460e56b0", "versionType": "git"}], "programFiles": ["drivers/mtd/ubi/wl.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.25"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.25", "versionType": "semver"}, {"status": "unaffected", "version": "4.14.308", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.276", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.235", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.173", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.100", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.18", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.2.5", "versionType": "semver", "lessThanOrEqual": "6.2.*"}, {"status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/mtd/ubi/wl.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/b40d2fbf47af58377e898b5062077a47bb28a132"}, {"url": "https://git.kernel.org/stable/c/f006f596fe851c3b6aae60b79f89f89f0e515d2f"}, {"url": "https://git.kernel.org/stable/c/b5be23f6ae610bdb262160a1f294afee6d0e6a69"}, {"url": "https://git.kernel.org/stable/c/8a18856e074479bd050b01e688c58defadce7ab0"}, {"url": "https://git.kernel.org/stable/c/3afaaf6f5867dc4ad383808d4053f428ec7b867d"}, {"url": "https://git.kernel.org/stable/c/cc4bc532acda66189bddc03b3fe1ad689d9a48a2"}, {"url": "https://git.kernel.org/stable/c/5af1c643184a5d09ff5b3f334077a4d0a163c677"}, {"url": "https://git.kernel.org/stable/c/4d57a7333e26040f2b583983e1970d9d460e56b0"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed\n\nFollowing process will trigger an infinite loop in ubi_wl_put_peb():\n\n\tubifs_bgt\t\tubi_bgt\nubifs_leb_unmap\n ubi_leb_unmap\n ubi_eba_unmap_leb\n ubi_wl_put_peb\twear_leveling_worker\n e1 = rb_entry(rb_first(&ubi->used)\n\t\t\t e2 = get_peb_for_wl(ubi)\n\t\t\t ubi_io_read_vid_hdr // return err (flash fault)\n\t\t\t out_error:\n\t\t\t ubi->move_from = ubi->move_to = NULL\n\t\t\t wl_entry_destroy(ubi, e1)\n\t\t\t ubi->lookuptbl[e->pnum] = NULL\n retry:\n e = ubi->lookuptbl[pnum];\t// return NULL\n\tif (e == ubi->move_from) {\t// NULL == NULL gets true\n\t goto retry;\t\t\t// infinite loop !!!\n\n$ top\n PID USER PR NI VIRT RES SHR S %CPU %MEM COMMAND\n 7676 root 20 0 0 0 0 R 100.0 0.0 ubifs_bgt0_0\n\nFix it by:\n 1) Letting ubi_wl_put_peb() returns directly if wearl leveling entry has\n been removed from 'ubi->lookuptbl'.\n 2) Using 'ubi->wl_lock' protecting wl entry deletion to preventing an\n use-after-free problem for wl entry in ubi_wl_put_peb().\n\nFetch a reproducer in [Link]."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.308", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.276", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.235", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.173", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.100", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.18", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.2.5", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.3", "versionStartIncluding": "2.6.25"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:14:17.891Z"}}}, "cveMetadata": {"cveId": "CVE-2023-53481", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:41:28.594Z", "dateReserved": "2025-10-01T11:39:39.402Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-10-01T11:42:49.825Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/mtd/ubi/wl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b40d2fbf47af58377e898b5062077a47bb28a132", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}, {"lessThan": "f006f596fe851c3b6aae60b79f89f89f0e515d2f", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}, {"lessThan": "b5be23f6ae610bdb262160a1f294afee6d0e6a69", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}, {"lessThan": "8a18856e074479bd050b01e688c58defadce7ab0", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}, {"lessThan": "3afaaf6f5867dc4ad383808d4053f428ec7b867d", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}, {"lessThan": "cc4bc532acda66189bddc03b3fe1ad689d9a48a2", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}, {"lessThan": "5af1c643184a5d09ff5b3f334077a4d0a163c677", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}, {"lessThan": "4d57a7333e26040f2b583983e1970d9d460e56b0", "status": "affected", "version": "43f9b25a9cdd7b177f77f026b1461abd1abbd174", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/mtd/ubi/wl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.25"}, {"lessThan": "2.6.25", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.308", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.276", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.235", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.173", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.100", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.18", "versionType": "semver"}, {"lessThanOrEqual": "6.2.*", "status": "unaffected", "version": "6.2.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3619A302-E12E-46AC-B1E4-182D5643C493", "versionEndExcluding": "4.14.308", "versionStartIncluding": "2.6.25", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C902FC54-DDBD-4DA6-BFEF-26889A267464", "versionEndExcluding": "4.19.276", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "13DD5E68-8CB4-46EE-9A8F-C7F6C1A84430", "versionEndExcluding": "5.4.235", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4D810CFB-B7C5-493C-B98A-0D5F0D8A47B6", "versionEndExcluding": "5.10.173", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D7E5BB5-018B-46B7-A2C4-1ADB75099822", "versionEndExcluding": "5.15.100", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C8D24FD5-5A98-4042-9419-39DCFCBEFFF5", "versionEndExcluding": "6.1.18", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0575B33B-A320-4E51-84CA-10C937341E02", "versionEndExcluding": "6.2.5", "versionStartIncluding": "6.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed\n\nFollowing process will trigger an infinite loop in ubi_wl_put_peb():\n\n\tubifs_bgt\t\tubi_bgt\nubifs_leb_unmap\n ubi_leb_unmap\n ubi_eba_unmap_leb\n ubi_wl_put_peb\twear_leveling_worker\n e1 = rb_entry(rb_first(&ubi->used)\n\t\t\t e2 = get_peb_for_wl(ubi)\n\t\t\t ubi_io_read_vid_hdr // return err (flash fault)\n\t\t\t out_error:\n\t\t\t ubi->move_from = ubi->move_to = NULL\n\t\t\t wl_entry_destroy(ubi, e1)\n\t\t\t ubi->lookuptbl[e->pnum] = NULL\n retry:\n e = ubi->lookuptbl[pnum];\t// return NULL\n\tif (e == ubi->move_from) {\t// NULL == NULL gets true\n\t goto retry;\t\t\t// infinite loop !!!\n\n$ top\n PID USER PR NI VIRT RES SHR S %CPU %MEM COMMAND\n 7676 root 20 0 0 0 0 R 100.0 0.0 ubifs_bgt0_0\n\nFix it by:\n 1) Letting ubi_wl_put_peb() returns directly if wearl leveling entry has\n been removed from 'ubi->lookuptbl'.\n 2) Using 'ubi->wl_lock' protecting wl entry deletion to preventing an\n use-after-free problem for wl entry in ubi_wl_put_peb().\n\nFetch a reproducer in [Link]."}], "id": "CVE-2023-53481", "lastModified": "2026-10-15T22:17:40.303", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53481", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:34:44.820023Z", "version": "2.0.3"}}]}, "published": "2025-10-01T12:15:50.743", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3afaaf6f5867dc4ad383808d4053f428ec7b867d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4d57a7333e26040f2b583983e1970d9d460e56b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5af1c643184a5d09ff5b3f334077a4d0a163c677"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8a18856e074479bd050b01e688c58defadce7ab0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b40d2fbf47af58377e898b5062077a47bb28a132"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b5be23f6ae610bdb262160a1f294afee6d0e6a69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cc4bc532acda66189bddc03b3fe1ad689d9a48a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f006f596fe851c3b6aae60b79f89f89f0e515d2f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed", "id": "2400789", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400789"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53481", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53481\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53481\nhttps://lore.kernel.org/linux-cve-announce/2025100113-CVE-2023-53481-cddb@gregkh/T"], "threat_severity": "Important"}

{"created": "2025-10-02T08:39:41.124991+00:00", "updated": "2025-10-02T08:39:41.125043+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}