CVE-2024-53222

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-53222", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:25.024Z", "datePublished": "2024-12-27T13:50:12.652Z", "dateUpdated": "2026-05-11T20:53:12.493Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:53:12.493Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nzram: fix NULL pointer in comp_algorithm_show()\n\nLTP reported a NULL pointer dereference as followed:\n\n CPU: 7 UID: 0 PID: 5995 Comm: cat Kdump: loaded Not tainted 6.12.0-rc6+ #3\n Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\n pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : __pi_strcmp+0x24/0x140\n lr : zcomp_available_show+0x60/0x100 [zram]\n sp : ffff800088b93b90\n x29: ffff800088b93b90 x28: 0000000000000001 x27: 0000000000400cc0\n x26: 0000000000000ffe x25: ffff80007b3e2388 x24: 0000000000000000\n x23: ffff80007b3e2390 x22: ffff0004041a9000 x21: ffff80007b3e2900\n x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n x11: 0000000000000000 x10: ffff80007b3e2900 x9 : ffff80007b3cb280\n x8 : 0101010101010101 x7 : 0000000000000000 x6 : 0000000000000000\n x5 : 0000000000000040 x4 : 0000000000000000 x3 : 00656c722d6f7a6c\n x2 : 0000000000000000 x1 : ffff80007b3e2900 x0 : 0000000000000000\n Call trace:\n __pi_strcmp+0x24/0x140\n comp_algorithm_show+0x40/0x70 [zram]\n dev_attr_show+0x28/0x80\n sysfs_kf_seq_show+0x90/0x140\n kernfs_seq_show+0x34/0x48\n seq_read_iter+0x1d4/0x4e8\n kernfs_fop_read_iter+0x40/0x58\n new_sync_read+0x9c/0x168\n vfs_read+0x1a8/0x1f8\n ksys_read+0x74/0x108\n __arm64_sys_read+0x24/0x38\n invoke_syscall+0x50/0x120\n el0_svc_common.constprop.0+0xc8/0xf0\n do_el0_svc+0x24/0x38\n el0_svc+0x38/0x138\n el0t_64_sync_handler+0xc0/0xc8\n el0t_64_sync+0x188/0x190\n\nThe zram->comp_algs[ZRAM_PRIMARY_COMP] can be NULL in zram_add() if\ncomp_algorithm_set() has not been called. User can access the zram device\nby sysfs after device_add_disk(), so there is a time window to trigger the\nNULL pointer dereference. Move it ahead device_add_disk() to make sure\nwhen user can access the zram device, it is ready. comp_algorithm_set()\nis protected by zram->init_lock in other places and no such problem."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/zram/zram_drv.c"], "versions": [{"version": "7ac07a26dea79c3892436bce41cce03dcbd3c4c7", "lessThan": "c7ee791e538537b281f60945298796f0a3971bbd", "status": "affected", "versionType": "git"}, {"version": "7ac07a26dea79c3892436bce41cce03dcbd3c4c7", "lessThan": "843d366ff19708668d95cda16bb8aba109a93dba", "status": "affected", "versionType": "git"}, {"version": "7ac07a26dea79c3892436bce41cce03dcbd3c4c7", "lessThan": "f364cdeb38938f9d03061682b8ff3779dd1730e5", "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/block/zram/zram_drv.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.84", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.2", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "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": "6.2", "versionEndExcluding": "6.6.84"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c7ee791e538537b281f60945298796f0a3971bbd"}, {"url": "https://git.kernel.org/stable/c/843d366ff19708668d95cda16bb8aba109a93dba"}, {"url": "https://git.kernel.org/stable/c/f364cdeb38938f9d03061682b8ff3779dd1730e5"}], "title": "zram: fix NULL pointer in comp_algorithm_show()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/block/zram/zram_drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c7ee791e538537b281f60945298796f0a3971bbd", "status": "affected", "version": "7ac07a26dea79c3892436bce41cce03dcbd3c4c7", "versionType": "git"}, {"lessThan": "843d366ff19708668d95cda16bb8aba109a93dba", "status": "affected", "version": "7ac07a26dea79c3892436bce41cce03dcbd3c4c7", "versionType": "git"}, {"lessThan": "f364cdeb38938f9d03061682b8ff3779dd1730e5", "status": "affected", "version": "7ac07a26dea79c3892436bce41cce03dcbd3c4c7", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/block/zram/zram_drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.2"}, {"lessThan": "6.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.84", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F21702AB-90B0-49AB-83E6-29B799AF41C7", "versionEndExcluding": "6.12.2", "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\nzram: fix NULL pointer in comp_algorithm_show()\n\nLTP reported a NULL pointer dereference as followed:\n\n CPU: 7 UID: 0 PID: 5995 Comm: cat Kdump: loaded Not tainted 6.12.0-rc6+ #3\n Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\n pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : __pi_strcmp+0x24/0x140\n lr : zcomp_available_show+0x60/0x100 [zram]\n sp : ffff800088b93b90\n x29: ffff800088b93b90 x28: 0000000000000001 x27: 0000000000400cc0\n x26: 0000000000000ffe x25: ffff80007b3e2388 x24: 0000000000000000\n x23: ffff80007b3e2390 x22: ffff0004041a9000 x21: ffff80007b3e2900\n x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n x11: 0000000000000000 x10: ffff80007b3e2900 x9 : ffff80007b3cb280\n x8 : 0101010101010101 x7 : 0000000000000000 x6 : 0000000000000000\n x5 : 0000000000000040 x4 : 0000000000000000 x3 : 00656c722d6f7a6c\n x2 : 0000000000000000 x1 : ffff80007b3e2900 x0 : 0000000000000000\n Call trace:\n __pi_strcmp+0x24/0x140\n comp_algorithm_show+0x40/0x70 [zram]\n dev_attr_show+0x28/0x80\n sysfs_kf_seq_show+0x90/0x140\n kernfs_seq_show+0x34/0x48\n seq_read_iter+0x1d4/0x4e8\n kernfs_fop_read_iter+0x40/0x58\n new_sync_read+0x9c/0x168\n vfs_read+0x1a8/0x1f8\n ksys_read+0x74/0x108\n __arm64_sys_read+0x24/0x38\n invoke_syscall+0x50/0x120\n el0_svc_common.constprop.0+0xc8/0xf0\n do_el0_svc+0x24/0x38\n el0_svc+0x38/0x138\n el0t_64_sync_handler+0xc0/0xc8\n el0t_64_sync+0x188/0x190\n\nThe zram->comp_algs[ZRAM_PRIMARY_COMP] can be NULL in zram_add() if\ncomp_algorithm_set() has not been called. User can access the zram device\nby sysfs after device_add_disk(), so there is a time window to trigger the\nNULL pointer dereference. Move it ahead device_add_disk() to make sure\nwhen user can access the zram device, it is ready. comp_algorithm_set()\nis protected by zram->init_lock in other places and no such problem."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: zram: arregla el puntero NULL en comp_algorithm_show() LTP inform\u00f3 una desreferencia de puntero NULL de la siguiente manera: CPU: 7 UID: 0 PID: 5995 Comm: cat Kdump: cargado No contaminado 6.12.0-rc6+ #3 Nombre del hardware: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __pi_strcmp+0x24/0x140 lr : zcomp_available_show+0x60/0x100 [zram] sp : ffff800088b93b90 x29: ffff800088b93b90 x28: 0000000000000001 x27: 0000000000400cc0 x26: 0000000000000ffe x25: ffff80007b3e2388 x24: 00000000000000000 x23: ffff80007b3e2390 x22: ffff0004041a9000 x21: ffff80007b3e2900 x20: 0000000000000000 x19: 00000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: ffff80007b3e2900 x9: ffff80007b3cb280 x8: 0101010101010101 x7: 0000000000000000 x6: 0000000000000000 x5: 0000000000000040 x4 : 0000000000000000 x3 : 00656c722d6f7a6c x2 : 000000000000000 x1 : ffff80007b3e2900 x0 : 0000000000000000 Rastreo de llamadas: __pi_strcmp+0x24/0x140 comp_algorithm_show+0x40/0x70 [zram] dev_attr_show+0x28/0x80 sysfs_kf_seq_show+0x90/0x140 kernfs_seq_show+0x34/0x48 seq_read_iter+0x1d4/0x4e8 El zram->comp_algs[ZRAM_PRIMARY_COMP] puede ser NULL en zram_add() si No se ha llamado a comp_algorithm_set(). El usuario puede acceder al dispositivo zram mediante sysfs despu\u00e9s de device_add_disk(), por lo que hay una ventana de tiempo para activar la desreferencia del puntero NULL. Mu\u00e9valo hacia delante en device_add_disk() para asegurarse de que cuando el usuario pueda acceder al dispositivo zram, est\u00e9 listo. comp_algorithm_set() est\u00e1 protegido por zram->init_lock en otros lugares y no existe ese problema."}], "id": "CVE-2024-53222", "lastModified": "2026-06-17T08:08:37.960", "metrics": {"cvssMetricV31": [{"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"}]}, "published": "2024-12-27T14:15:30.327", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/843d366ff19708668d95cda16bb8aba109a93dba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c7ee791e538537b281f60945298796f0a3971bbd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f364cdeb38938f9d03061682b8ff3779dd1730e5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2025:6966", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}, {"advisory": "RHSA-2025:6966", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}], "bugzilla": {"description": "kernel: zram: fix NULL pointer in comp_algorithm_show()", "id": "2334373", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334373"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nzram: fix NULL pointer in comp_algorithm_show()\nLTP reported a NULL pointer dereference as followed:\nCPU: 7 UID: 0 PID: 5995 Comm: cat Kdump: loaded Not tainted 6.12.0-rc6+ #3\nHardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\npstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : __pi_strcmp+0x24/0x140\nlr : zcomp_available_show+0x60/0x100 [zram]\nsp : ffff800088b93b90\nx29: ffff800088b93b90 x28: 0000000000000001 x27: 0000000000400cc0\nx26: 0000000000000ffe x25: ffff80007b3e2388 x24: 0000000000000000\nx23: ffff80007b3e2390 x22: ffff0004041a9000 x21: ffff80007b3e2900\nx20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000\nx17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\nx14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\nx11: 0000000000000000 x10: ffff80007b3e2900 x9 : ffff80007b3cb280\nx8 : 0101010101010101 x7 : 0000000000000000 x6 : 0000000000000000\nx5 : 0000000000000040 x4 : 0000000000000000 x3 : 00656c722d6f7a6c\nx2 : 0000000000000000 x1 : ffff80007b3e2900 x0 : 0000000000000000\nCall trace:\n__pi_strcmp+0x24/0x140\ncomp_algorithm_show+0x40/0x70 [zram]\ndev_attr_show+0x28/0x80\nsysfs_kf_seq_show+0x90/0x140\nkernfs_seq_show+0x34/0x48\nseq_read_iter+0x1d4/0x4e8\nkernfs_fop_read_iter+0x40/0x58\nnew_sync_read+0x9c/0x168\nvfs_read+0x1a8/0x1f8\nksys_read+0x74/0x108\n__arm64_sys_read+0x24/0x38\ninvoke_syscall+0x50/0x120\nel0_svc_common.constprop.0+0xc8/0xf0\ndo_el0_svc+0x24/0x38\nel0_svc+0x38/0x138\nel0t_64_sync_handler+0xc0/0xc8\nel0t_64_sync+0x188/0x190\nThe zram->comp_algs[ZRAM_PRIMARY_COMP] can be NULL in zram_add() if\ncomp_algorithm_set() has not been called. User can access the zram device\nby sysfs after device_add_disk(), so there is a time window to trigger the\nNULL pointer dereference. Move it ahead device_add_disk() to make sure\nwhen user can access the zram device, it is ready. comp_algorithm_set()\nis protected by zram->init_lock in other places and no such problem."], "name": "CVE-2024-53222", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "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-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-53222\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-53222\nhttps://lore.kernel.org/linux-cve-announce/2024122734-CVE-2024-53222-6c79@gregkh/T"], "threat_severity": "Moderate"}

{}