| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: Fix mirred deadlock on device recursion\n\nWhen the mirred action is used on a classful egress qdisc and a packet is\nmirrored or redirected to self we hit a qdisc lock deadlock.\nSee trace below.\n\n[..... other info removed for brevity....]\n[ 82.890906]\n[ 82.890906] ============================================\n[ 82.890906] WARNING: possible recursive locking detected\n[ 82.890906] 6.8.0-05205-g77fadd89fe2d-dirty #213 Tainted: G W\n[ 82.890906] --------------------------------------------\n[ 82.890906] ping/418 is trying to acquire lock:\n[ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at:\n__dev_queue_xmit+0x1778/0x3550\n[ 82.890906]\n[ 82.890906] but task is already holding lock:\n[ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at:\n__dev_queue_xmit+0x1778/0x3550\n[ 82.890906]\n[ 82.890906] other info that might help us debug this:\n[ 82.890906] Possible unsafe locking scenario:\n[ 82.890906]\n[ 82.890906] CPU0\n[ 82.890906] ----\n[ 82.890906] lock(&sch->q.lock);\n[ 82.890906] lock(&sch->q.lock);\n[ 82.890906]\n[ 82.890906] *** DEADLOCK ***\n[ 82.890906]\n[..... other info removed for brevity....]\n\nExample setup (eth0->eth0) to recreate\ntc qdisc add dev eth0 root handle 1: htb default 30\ntc filter add dev eth0 handle 1: protocol ip prio 2 matchall \\\n action mirred egress redirect dev eth0\n\nAnother example(eth0->eth1->eth0) to recreate\ntc qdisc add dev eth0 root handle 1: htb default 30\ntc filter add dev eth0 handle 1: protocol ip prio 2 matchall \\\n action mirred egress redirect dev eth1\n\ntc qdisc add dev eth1 root handle 1: htb default 30\ntc filter add dev eth1 handle 1: protocol ip prio 2 matchall \\\n action mirred egress redirect dev eth0\n\nWe fix this by adding an owner field (CPU id) to struct Qdisc set after\nroot qdisc is entered. When the softirq enters it a second time, if the\nqdisc owner is the same CPU, the packet is dropped to break the loop." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/net/sch_generic.h", |
| "net/core/dev.c", |
| "net/sched/sch_generic.c" |
| ], |
| "versions": [ |
| { |
| "version": "e578d9c02587d57bfa7b560767c698a668a468c6", |
| "lessThan": "e6b90468da4dae2281a6e381107f411efb48b0ef", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "e578d9c02587d57bfa7b560767c698a668a468c6", |
| "lessThan": "0f022d32c3eca477fbf79a205243a6123ed0fe11", |
| "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/sch_generic.h", |
| "net/core/dev.c", |
| "net/sched/sch_generic.c" |
| ], |
| "versions": [ |
| { |
| "version": "4.2", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "4.2", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.8.8", |
| "lessThanOrEqual": "6.8.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.9", |
| "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": "4.2", |
| "versionEndExcluding": "6.8.8" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.2", |
| "versionEndExcluding": "6.9" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/e6b90468da4dae2281a6e381107f411efb48b0ef" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/0f022d32c3eca477fbf79a205243a6123ed0fe11" |
| } |
| ], |
| "title": "net/sched: Fix mirred deadlock on device recursion", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-27010", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
