| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "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" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-53222", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
