| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/page_alloc: let GFP_ATOMIC order-0 allocs access highatomic reserves\n\nUnder memory pressure it's possible for GFP_ATOMIC order-0 allocations to\nfail even though free pages are available in the highatomic reserves. \nGFP_ATOMIC allocations cannot trigger unreserve_highatomic_pageblock()\nsince it's only run from reclaim.\n\nGiven that such allocations will pass the watermarks in\n__zone_watermark_unusable_free(), it makes sense to fallback to highatomic\nreserves the same way that ALLOC_OOM can.\n\nThis fixes order-0 page allocation failures observed on Cloudflare's fleet\nwhen handling network packets:\n\n kswapd1: page allocation failure: order:0, mode:0x820(GFP_ATOMIC),\n nodemask=(null),cpuset=/,mems_allowed=0-7\n CPU: 10 PID: 696 Comm: kswapd1 Kdump: loaded Tainted: G O 6.6.43-CUSTOM #1\n Hardware name: MACHINE\n Call Trace:\n <IRQ>\n dump_stack_lvl+0x3c/0x50\n warn_alloc+0x13a/0x1c0\n __alloc_pages_slowpath.constprop.0+0xc9d/0xd10\n __alloc_pages+0x327/0x340\n __napi_alloc_skb+0x16d/0x1f0\n bnxt_rx_page_skb+0x96/0x1b0 [bnxt_en]\n bnxt_rx_pkt+0x201/0x15e0 [bnxt_en]\n __bnxt_poll_work+0x156/0x2b0 [bnxt_en]\n bnxt_poll+0xd9/0x1c0 [bnxt_en]\n __napi_poll+0x2b/0x1b0\n bpf_trampoline_6442524138+0x7d/0x1000\n __napi_poll+0x5/0x1b0\n net_rx_action+0x342/0x740\n handle_softirqs+0xcf/0x2b0\n irq_exit_rcu+0x6c/0x90\n sysvec_apic_timer_interrupt+0x72/0x90\n </IRQ>\n\n[mfleming@cloudflare.com: update comment]\n Link: https://lkml.kernel.org/r/20241015125158.3597702-1-matt@readmodwrite.com" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "mm/page_alloc.c" |
| ], |
| "versions": [ |
| { |
| "version": "1d91df85f399", |
| "lessThan": "4c4e238d3ada", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1d91df85f399", |
| "lessThan": "189b954469cf", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1d91df85f399", |
| "lessThan": "b958948ae1cb", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1d91df85f399", |
| "lessThan": "d0fdacfb85a3", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1d91df85f399", |
| "lessThan": "281dd25c1a01", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "mm/page_alloc.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.9", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.9", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.171", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.116", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.60", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.7", |
| "lessThanOrEqual": "6.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12-rc6", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/4c4e238d3adad3c94bb255d0f117d3685bbfdd33" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/189b954469cf82f8b8cf496f8de94b006d2d4746" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b958948ae1cb3e39c48e9f805436fd652103c71e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/d0fdacfb85a3e1223b894cc6e60091ec91049e9e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/281dd25c1a018261a04d1b8bf41a0674000bfe38" |
| } |
| ], |
| "title": "mm/page_alloc: let GFP_ATOMIC order-0 allocs access highatomic reserves", |
| "x_generator": { |
| "engine": "bippy-9e1c9544281a" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-50219", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
