| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nproc: fix UAF in proc_get_inode()\n\nFix race between rmmod and /proc/XXX's inode instantiation.\n\nThe bug is that pde->proc_ops don't belong to /proc, it belongs to a\nmodule, therefore dereferencing it after /proc entry has been registered\nis a bug unless use_pde/unuse_pde() pair has been used.\n\nuse_pde/unuse_pde can be avoided (2 atomic ops!) because pde->proc_ops\nnever changes so information necessary for inode instantiation can be\nsaved _before_ proc_register() in PDE itself and used later, avoiding\npde->proc_ops->... dereference.\n\n rmmod lookup\nsys_delete_module\n proc_lookup_de\n\t\t\t pde_get(de);\n\t\t\t proc_get_inode(dir->i_sb, de);\n mod->exit()\n proc_remove\n remove_proc_subtree\n proc_entry_rundown(de);\n free_module(mod);\n\n if (S_ISREG(inode->i_mode))\n\t if (de->proc_ops->proc_read_iter)\n --> As module is already freed, will trigger UAF\n\nBUG: unable to handle page fault for address: fffffbfff80a702b\nPGD 817fc4067 P4D 817fc4067 PUD 817fc0067 PMD 102ef4067 PTE 0\nOops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 26 UID: 0 PID: 2667 Comm: ls Tainted: G\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\nRIP: 0010:proc_get_inode+0x302/0x6e0\nRSP: 0018:ffff88811c837998 EFLAGS: 00010a06\nRAX: dffffc0000000000 RBX: ffffffffc0538140 RCX: 0000000000000007\nRDX: 1ffffffff80a702b RSI: 0000000000000001 RDI: ffffffffc0538158\nRBP: ffff8881299a6000 R08: 0000000067bbe1e5 R09: 1ffff11023906f20\nR10: ffffffffb560ca07 R11: ffffffffb2b43a58 R12: ffff888105bb78f0\nR13: ffff888100518048 R14: ffff8881299a6004 R15: 0000000000000001\nFS: 00007f95b9686840(0000) GS:ffff8883af100000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: fffffbfff80a702b CR3: 0000000117dd2000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n proc_lookup_de+0x11f/0x2e0\n __lookup_slow+0x188/0x350\n walk_component+0x2ab/0x4f0\n path_lookupat+0x120/0x660\n filename_lookup+0x1ce/0x560\n vfs_statx+0xac/0x150\n __do_sys_newstat+0x96/0x110\n do_syscall_64+0x5f/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n[adobriyan@gmail.com: don't do 2 atomic ops on the common path]" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/proc/generic.c", |
| "fs/proc/inode.c", |
| "fs/proc/internal.h", |
| "include/linux/proc_fs.h" |
| ], |
| "versions": [ |
| { |
| "version": "778f3dd5a13c9e1642e0b2efea4b769387a70afa", |
| "lessThan": "eda279586e571b05dff44d48e05f8977ad05855d", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "778f3dd5a13c9e1642e0b2efea4b769387a70afa", |
| "lessThan": "4b0b8445b6fd41e6f62ac90547a0ea9d348de3fa", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "778f3dd5a13c9e1642e0b2efea4b769387a70afa", |
| "lessThan": "966f331403dc3ed04ff64eaf3930cf1267965e53", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "778f3dd5a13c9e1642e0b2efea4b769387a70afa", |
| "lessThan": "63b53198aff2e4e6c5866a4ff73c7891f958ffa4", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "778f3dd5a13c9e1642e0b2efea4b769387a70afa", |
| "lessThan": "ede3e8ac90ae106f0b29cd759aadebc1568f1308", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "778f3dd5a13c9e1642e0b2efea4b769387a70afa", |
| "lessThan": "64dc7c68e040251d9ec6e989acb69f8f6ae4a10b", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "778f3dd5a13c9e1642e0b2efea4b769387a70afa", |
| "lessThan": "654b33ada4ab5e926cd9c570196fefa7bec7c1df", |
| "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/proc/generic.c", |
| "fs/proc/inode.c", |
| "fs/proc/internal.h", |
| "include/linux/proc_fs.h" |
| ], |
| "versions": [ |
| { |
| "version": "2.6.23", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "2.6.23", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.236", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.180", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.132", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.85", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.21", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13.9", |
| "lessThanOrEqual": "6.13.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14", |
| "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": "2.6.23", |
| "versionEndExcluding": "5.10.236" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.23", |
| "versionEndExcluding": "5.15.180" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.23", |
| "versionEndExcluding": "6.1.132" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.23", |
| "versionEndExcluding": "6.6.85" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.23", |
| "versionEndExcluding": "6.12.21" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.23", |
| "versionEndExcluding": "6.13.9" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.23", |
| "versionEndExcluding": "6.14" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/eda279586e571b05dff44d48e05f8977ad05855d" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/4b0b8445b6fd41e6f62ac90547a0ea9d348de3fa" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/966f331403dc3ed04ff64eaf3930cf1267965e53" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/63b53198aff2e4e6c5866a4ff73c7891f958ffa4" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/ede3e8ac90ae106f0b29cd759aadebc1568f1308" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/64dc7c68e040251d9ec6e989acb69f8f6ae4a10b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/654b33ada4ab5e926cd9c570196fefa7bec7c1df" |
| } |
| ], |
| "title": "proc: fix UAF in proc_get_inode()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-21999", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
