| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: do not defer rule destruction via call_rcu\n\nnf_tables_chain_destroy can sleep, it can't be used from call_rcu\ncallbacks.\n\nMoreover, nf_tables_rule_release() is only safe for error unwinding,\nwhile transaction mutex is held and the to-be-desroyed rule was not\nexposed to either dataplane or dumps, as it deactives+frees without\nthe required synchronize_rcu() in-between.\n\nnft_rule_expr_deactivate() callbacks will change ->use counters\nof other chains/sets, see e.g. nft_lookup .deactivate callback, these\nmust be serialized via transaction mutex.\n\nAlso add a few lockdep asserts to make this more explicit.\n\nCalling synchronize_rcu() isn't ideal, but fixing this without is hard\nand way more intrusive. As-is, we can get:\n\nWARNING: .. net/netfilter/nf_tables_api.c:5515 nft_set_destroy+0x..\nWorkqueue: events nf_tables_trans_destroy_work\nRIP: 0010:nft_set_destroy+0x3fe/0x5c0\nCall Trace:\n <TASK>\n nf_tables_trans_destroy_work+0x6b7/0xad0\n process_one_work+0x64a/0xce0\n worker_thread+0x613/0x10d0\n\nIn case the synchronize_rcu becomes an issue, we can explore alternatives.\n\nOne way would be to allocate nft_trans_rule objects + one nft_trans_chain\nobject, deactivate the rules + the chain and then defer the freeing to the\nnft destroy workqueue. We'd still need to keep the synchronize_rcu path as\na fallback to handle -ENOMEM corner cases though." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/net/netfilter/nf_tables.h", |
| "net/netfilter/nf_tables_api.c" |
| ], |
| "versions": [ |
| { |
| "version": "9eee6097ffb26cdd2adb988c0d378fa0d650c737", |
| "lessThan": "5146c27b2780aac59876a887a5f4e793b8949862", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "558f503f707f481bbf40efa74a938b8021df841d", |
| "lessThan": "2991dc357a28b61c13ed1f7b59e9251e2b4562fb", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "a394c160d57f4b083bd904a22802f6fb7f5b3cea", |
| "lessThan": "b8d8f53e1858178882b881b8c09f94ef0e83bf76", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "e6c32a64d61184c2bdf89442b3d31ef530afba34", |
| "lessThan": "b0f013bebf94fe7ae75e5a53be2f2bd1cc1841e3", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "bfd05c68e4c6320304e9f371ffa356b6e4b9cc53", |
| "lessThan": "27f0574253f6c24c8ee4e3f0a685b75ed3a256ed", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c03d278fdf35e73dd0ec543b9b556876b9d9a8dc", |
| "lessThan": "7cf0bd232b565d9852cb25fd094f77254773e048", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c03d278fdf35e73dd0ec543b9b556876b9d9a8dc", |
| "lessThan": "b04df3da1b5c6f6dc7cdccc37941740c078c4043", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "cb401e5799e0acacb405f2128097e9c4ccf82f8a", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/net/netfilter/nf_tables.h", |
| "net/netfilter/nf_tables_api.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.12", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.12", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.67", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.6", |
| "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": "6.6.61", |
| "versionEndExcluding": "6.6.67" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.12", |
| "versionEndExcluding": "6.12.6" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.12", |
| "versionEndExcluding": "6.13" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.11.8" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/5146c27b2780aac59876a887a5f4e793b8949862" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2991dc357a28b61c13ed1f7b59e9251e2b4562fb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b8d8f53e1858178882b881b8c09f94ef0e83bf76" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b0f013bebf94fe7ae75e5a53be2f2bd1cc1841e3" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/27f0574253f6c24c8ee4e3f0a685b75ed3a256ed" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/7cf0bd232b565d9852cb25fd094f77254773e048" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b04df3da1b5c6f6dc7cdccc37941740c078c4043" |
| } |
| ], |
| "title": "netfilter: nf_tables: do not defer rule destruction via call_rcu", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-56655", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
