| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix memory leaks in __check_func_call\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff88817139d000 (size 2048):\n comm \"test_progs\", pid 33246, jiffies 4307381979 (age 45851.820s)\n hex dump (first 32 bytes):\n 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<0000000045f075f0>] kmalloc_trace+0x27/0xa0\n [<0000000098b7c90a>] __check_func_call+0x316/0x1230\n [<00000000b4c3c403>] check_helper_call+0x172e/0x4700\n [<00000000aa3875b7>] do_check+0x21d8/0x45e0\n [<000000001147357b>] do_check_common+0x767/0xaf0\n [<00000000b5a595b4>] bpf_check+0x43e3/0x5bc0\n [<0000000011e391b1>] bpf_prog_load+0xf26/0x1940\n [<0000000007f765c0>] __sys_bpf+0xd2c/0x3650\n [<00000000839815d6>] __x64_sys_bpf+0x75/0xc0\n [<00000000946ee250>] do_syscall_64+0x3b/0x90\n [<0000000000506b7f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe root case here is: In function prepare_func_exit(), the callee is\nnot released in the abnormal scenario after \"state->curframe--;\". To\nfix, move \"state->curframe--;\" to the very bottom of the function,\nright when we free callee and reset frame[] pointer to NULL, as Andrii\nsuggested.\n\nIn addition, function __check_func_call() has a similar problem. In\nthe abnormal scenario before \"state->curframe++;\", the callee also\nshould be released by free_func_state()." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "kernel/bpf/verifier.c" |
| ], |
| "versions": [ |
| { |
| "version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", |
| "lessThan": "d4944497827a3d14bc5a26dbcfb7433eb5a956c0", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", |
| "lessThan": "83946d772e756734a900ef99dbe0aeda506adf37", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", |
| "lessThan": "eb86559a691cea5fa63e57a03ec3dc9c31e97955", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "kernel/bpf/verifier.c" |
| ], |
| "versions": [ |
| { |
| "version": "4.20", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "4.20", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.80", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.0.10", |
| "lessThanOrEqual": "6.0.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1", |
| "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": "4.20", |
| "versionEndExcluding": "5.15.80" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "6.0.10" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "6.1" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/d4944497827a3d14bc5a26dbcfb7433eb5a956c0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/83946d772e756734a900ef99dbe0aeda506adf37" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/eb86559a691cea5fa63e57a03ec3dc9c31e97955" |
| } |
| ], |
| "title": "bpf: Fix memory leaks in __check_func_call", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2022-49837", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
