CVE-2025-38206

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38206", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.994Z", "datePublished": "2025-07-04T13:37:25.966Z", "dateUpdated": "2026-09-02T12:49:18.688Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-02T12:49:18.688Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix double free in delayed_free\n\nThe double free could happen in the following path.\n\nexfat_create_upcase_table()\n exfat_create_upcase_table() : return error\n exfat_free_upcase_table() : free ->vol_utbl\n exfat_load_default_upcase_table : return error\n exfat_kill_sb()\n delayed_free()\n exfat_free_upcase_table() <--------- double free\nThis patch set ->vol_util as NULL after freeing it."}], "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 bug is reached only through the local `mount(2)`/`fsconfig(2)` path on a block device holding a crafted exfat image (removable media, loop device, or USB stick on a kiosk/Android handset). There is no remote or network data path into `exfat_create_upcase_table()`.\nAC:L - The attacker deterministically forces the first free by crafting an upcase-table dentry with a bad checksum, and can drive the required `kvcalloc` failure by generating memory/vmalloc pressure while repeatedly re-mounting the image, so success is not gated on conditions outside their influence. Consistent with prior kernel CNA scoring of allocation-failure-dependent bugs, this is Low.\nPR:L - exfat is the standard removable-media filesystem on Android and desktop Linux, where vold and udisks2 auto-mount attacker-supplied SD cards and USB sticks on behalf of the unprivileged seat/session user, so no elevated credentials are needed to reach `exfat_fill_super`. This matches the Low value assigned to the other exfat mount-time image-parsing CVEs.\nUI:N - On auto-mounting systems the crafted volume is parsed by the kernel as soon as the attacker attaches the media, and a local user with removable-media or loop-mount rights performs the entire sequence from their own process. No separate victim action is required.\nS:U - The freed `sbi->vol_utbl` allocation and the resulting corruption are entirely within the kernel's own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The second `kvfree()` occurs in an RCU callback long after the first, so the 128 KiB region can be reallocated to an unrelated kernel object that is then released while still referenced, giving the attacker a page/vmap-level use-after-free usable as an arbitrary kernel-memory read primitive. Double-free-class corruption is scored High.\nI:H - Freeing memory that has already been reassigned lets the attacker spray controlled data into pages or vmap areas still in use by other subsystems (kernel stacks, BPF allocations, slab metadata), yielding a write primitive and control-flow hijack potential. This is full memory corruption, not a benign accounting error.\nA:H - Even without exploitation, the double free triggers a page-allocator/vfree corruption `BUG`/`WARN` in an RCU callback context or corrupts freelists, producing a kernel oops or panic. With `panic_on_warn` set, the \"Trying to vfree() nonexistent vm area\" path is an immediate full system panic."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/exfat/nls.c"], "versions": [{"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "13d8de1b6568dcc31a95534ced16bc0c9a67bc15", "status": "affected", "versionType": "git"}, {"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "66e84439ec2af776ce749e8540f8fdd257774152", "status": "affected", "versionType": "git"}, {"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "ea27703eb0efbadcd45b9949526160ed90536a72", "status": "affected", "versionType": "git"}, {"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0", "status": "affected", "versionType": "git"}, {"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "29abaf93357f4a7d083cf399d4306999e20db31d", "status": "affected", "versionType": "git"}, {"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd", "status": "affected", "versionType": "git"}, {"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "1f3d9724e16d62c7d42c67d6613b8512f2887c22", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/exfat/nls.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.239", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.186", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.187", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.156", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.108", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.4", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16", "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": "5.7", "versionEndExcluding": "5.10.239"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.186"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.187"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.156"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.108"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.15.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15"}, {"url": "https://git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152"}, {"url": "https://git.kernel.org/stable/c/ea27703eb0efbadcd45b9949526160ed90536a72"}, {"url": "https://git.kernel.org/stable/c/ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0"}, {"url": "https://git.kernel.org/stable/c/29abaf93357f4a7d083cf399d4306999e20db31d"}, {"url": "https://git.kernel.org/stable/c/d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd"}, {"url": "https://git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22"}], "title": "exfat: fix double free in delayed_free", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:35:27.691Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-38206", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-10T20:42:19.143911Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-11T18:44:21.826Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:35:27.691Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-38206", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-10T20:42:19.143911Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-11T17:39:17.002Z"}}], "cna": {"title": "exfat: fix double free in delayed_free", "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 bug is reached only through the local `mount(2)`/`fsconfig(2)` path on a block device holding a crafted exfat image (removable media, loop device, or USB stick on a kiosk/Android handset). There is no remote or network data path into `exfat_create_upcase_table()`.\nAC:L - The attacker deterministically forces the first free by crafting an upcase-table dentry with a bad checksum, and can drive the required `kvcalloc` failure by generating memory/vmalloc pressure while repeatedly re-mounting the image, so success is not gated on conditions outside their influence. Consistent with prior kernel CNA scoring of allocation-failure-dependent bugs, this is Low.\nPR:L - exfat is the standard removable-media filesystem on Android and desktop Linux, where vold and udisks2 auto-mount attacker-supplied SD cards and USB sticks on behalf of the unprivileged seat/session user, so no elevated credentials are needed to reach `exfat_fill_super`. This matches the Low value assigned to the other exfat mount-time image-parsing CVEs.\nUI:N - On auto-mounting systems the crafted volume is parsed by the kernel as soon as the attacker attaches the media, and a local user with removable-media or loop-mount rights performs the entire sequence from their own process. No separate victim action is required.\nS:U - The freed `sbi->vol_utbl` allocation and the resulting corruption are entirely within the kernel's own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The second `kvfree()` occurs in an RCU callback long after the first, so the 128 KiB region can be reallocated to an unrelated kernel object that is then released while still referenced, giving the attacker a page/vmap-level use-after-free usable as an arbitrary kernel-memory read primitive. Double-free-class corruption is scored High.\nI:H - Freeing memory that has already been reassigned lets the attacker spray controlled data into pages or vmap areas still in use by other subsystems (kernel stacks, BPF allocations, slab metadata), yielding a write primitive and control-flow hijack potential. This is full memory corruption, not a benign accounting error.\nA:H - Even without exploitation, the double free triggers a page-allocator/vfree corruption `BUG`/`WARN` in an RCU callback context or corrupts freelists, producing a kernel oops or panic. With `panic_on_warn` set, the \"Trying to vfree() nonexistent vm area\" path is an immediate full system panic."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "13d8de1b6568dcc31a95534ced16bc0c9a67bc15", "versionType": "git"}, {"status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "66e84439ec2af776ce749e8540f8fdd257774152", "versionType": "git"}, {"status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "ea27703eb0efbadcd45b9949526160ed90536a72", "versionType": "git"}, {"status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0", "versionType": "git"}, {"status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "29abaf93357f4a7d083cf399d4306999e20db31d", "versionType": "git"}, {"status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd", "versionType": "git"}, {"status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "lessThan": "1f3d9724e16d62c7d42c67d6613b8512f2887c22", "versionType": "git"}], "programFiles": ["fs/exfat/nls.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"status": "unaffected", "version": "0", "lessThan": "5.7", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.239", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.186", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.187", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.156", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.108", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.15.4", "versionType": "semver", "lessThanOrEqual": "6.15.*"}, {"status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/exfat/nls.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15"}, {"url": "https://git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152"}, {"url": "https://git.kernel.org/stable/c/ea27703eb0efbadcd45b9949526160ed90536a72"}, {"url": "https://git.kernel.org/stable/c/ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0"}, {"url": "https://git.kernel.org/stable/c/29abaf93357f4a7d083cf399d4306999e20db31d"}, {"url": "https://git.kernel.org/stable/c/d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd"}, {"url": "https://git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix double free in delayed_free\n\nThe double free could happen in the following path.\n\nexfat_create_upcase_table()\n exfat_create_upcase_table() : return error\n exfat_free_upcase_table() : free ->vol_utbl\n exfat_load_default_upcase_table : return error\n exfat_kill_sb()\n delayed_free()\n exfat_free_upcase_table() <--------- double free\nThis patch set ->vol_util as NULL after freeing it."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.239", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.186", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.187", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.156", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.108", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.15.4", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.16", "versionStartIncluding": "5.7"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-02T12:49:18.688Z"}}}, "cveMetadata": {"cveId": "CVE-2025-38206", "state": "PUBLISHED", "dateUpdated": "2026-09-02T12:49:18.688Z", "dateReserved": "2025-04-16T04:51:23.994Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-07-04T13:37:25.966Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/exfat/nls.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "13d8de1b6568dcc31a95534ced16bc0c9a67bc15", "status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "versionType": "git"}, {"lessThan": "66e84439ec2af776ce749e8540f8fdd257774152", "status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "versionType": "git"}, {"lessThan": "ea27703eb0efbadcd45b9949526160ed90536a72", "status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "versionType": "git"}, {"lessThan": "ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0", "status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "versionType": "git"}, {"lessThan": "29abaf93357f4a7d083cf399d4306999e20db31d", "status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "versionType": "git"}, {"lessThan": "d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd", "status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "versionType": "git"}, {"lessThan": "1f3d9724e16d62c7d42c67d6613b8512f2887c22", "status": "affected", "version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/exfat/nls.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.239", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.186", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.187", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.156", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.108", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0770A04F-68CB-4B08-8E99-2466EB67D7A0", "versionEndExcluding": "5.10.239", "versionStartIncluding": "5.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D96F2C0D-0D4A-4658-AD34-D8A626EA422D", "versionEndExcluding": "5.15.186", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CF41C6A0-D0C0-49DF-8756-8E9A19FCC39A", "versionEndExcluding": "6.15.4", "versionStartIncluding": "5.16", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix double free in delayed_free\n\nThe double free could happen in the following path.\n\nexfat_create_upcase_table()\n exfat_create_upcase_table() : return error\n exfat_free_upcase_table() : free ->vol_utbl\n exfat_load_default_upcase_table : return error\n exfat_kill_sb()\n delayed_free()\n exfat_free_upcase_table() <--------- double free\nThis patch set ->vol_util as NULL after freeing it."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: exfat: corrige la doble liberaci\u00f3n en delayed_free La doble liberaci\u00f3n podr\u00eda ocurrir en la siguiente ruta. exfat_create_upcase_table() exfat_create_upcase_table() : devolver error exfat_free_upcase_table() : liberar -&gt;vol_utbl exfat_load_default_upcase_table : devolver error exfat_kill_sb() delayed_free() exfat_free_upcase_table() &lt;--------- doble liberaci\u00f3n Este parche establece -&gt;vol_util como NULL despu\u00e9s de liberarlo."}], "id": "CVE-2025-38206", "lastModified": "2026-09-02T13:16:49.140", "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": 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": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-38206", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-10T20:42:19.143911Z", "version": "2.0.3"}}]}, "published": "2025-07-04T14:15:28.703", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/29abaf93357f4a7d083cf399d4306999e20db31d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ea27703eb0efbadcd45b9949526160ed90536a72"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: exfat: fix double free in delayed_free", "id": "2376377", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2376377"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\nexfat: fix double free in delayed_free\nThe double free could happen in the following path.\nexfat_create_upcase_table()\nexfat_create_upcase_table() : return error\nexfat_free_upcase_table() : free ->vol_utbl\nexfat_load_default_upcase_table : return error\nexfat_kill_sb()\ndelayed_free()\nexfat_free_upcase_table() <--------- double free\nThis patch set ->vol_util as NULL after freeing it."], "name": "CVE-2025-38206", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not 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"}], "public_date": "2025-07-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38206\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38206\nhttps://lore.kernel.org/linux-cve-announce/2025070420-CVE-2025-38206-a077@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-13T21:47:55.583677+00:00", "updated": "2025-07-13T21:47:55.583738+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}