NVD Vulnerability Detail

CVE-2024-43835

Summary	In the Linux kernel, the following vulnerability has been resolved: virtio_net: Fix napi_skb_cache_put warning After the commit bdacf3e34945 ("net: Use nested-BH locking for napi_alloc_cache.") was merged, the following warning began to appear: WARNING: CPU: 5 PID: 1 at net/core/skbuff.c:1451 napi_skb_cache_put+0x82/0x4b0 __warn+0x12f/0x340 napi_skb_cache_put+0x82/0x4b0 napi_skb_cache_put+0x82/0x4b0 report_bug+0x165/0x370 handle_bug+0x3d/0x80 exc_invalid_op+0x1a/0x50 asm_exc_invalid_op+0x1a/0x20 __free_old_xmit+0x1c8/0x510 napi_skb_cache_put+0x82/0x4b0 __free_old_xmit+0x1c8/0x510 __free_old_xmit+0x1c8/0x510 __pfx___free_old_xmit+0x10/0x10 The issue arises because virtio is assuming it's running in NAPI context even when it's not, such as in the netpoll case. To resolve this, modify virtnet_poll_tx() to only set NAPI when budget is available. Same for virtnet_poll_cleantx(), which always assumed that it was in a NAPI context.
Publication Date	Aug. 17, 2024, 7:15 p.m.
Registration Date	Aug. 26, 2024, 5:01 p.m.
Last Update	Oct. 31, 2024, 6:45 a.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel::::::::		5.0			6.10.3

Related information, measures and tools

No	URL	タグ
1	https://git.kernel.org/stable/c/468a729b78895893d0e580ceea49bed8ada2a2bd	Patch
2	https://git.kernel.org/stable/c/f8321fa75102246d7415a6af441872f6637c93ab	Patch
3	https://git.kernel.org/stable/c/6b5325f2457521bbece29499970c0117a648c620	Patch
4	https://git.kernel.org/stable/c/f5e9a22d19bb98a7e86034db85eb295e94187caa	Patch
5	https://git.kernel.org/stable/c/19ac6f29bf64304ef04630c8ab56ecd2059d7aa1	Patch
6	https://git.kernel.org/stable/c/d3af435e8ace119e58d8e21d3d2d6a4e7c4a4baa	Patch
7	https://git.kernel.org/stable/c/842a97b5e44f0c8a9fc356fe976e0e13ddcf7783	Patch
8	https://git.kernel.org/stable/c/cc7340f18e45886121c131227985d64ef666012f	Patch

Common Vulnerabilities List

JVN Vulnerability Information

Linux の Linux Kernel における脆弱性

Title	Linux の Linux Kernel における脆弱性
Summary	Linux の Linux Kernel には、不特定の脆弱性が存在します。
Possible impacts	サービス運用妨害 (DoS) 状態にされる可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	July 14, 2024, midnight
Registration Date	Nov. 1, 2024, 5:21 p.m.
Last Update	Nov. 1, 2024, 5:21 p.m.

Affected System

Linux

Linux Kernel 5.0 以上 6.10.3 未満

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2024-43835	https://www.cve.org/CVERecord?id=CVE-2024-43835
National Vulnerability Database (NVD)
2	CVE-2024-43835	https://nvd.nist.gov/vuln/detail/CVE-2024-43835

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-noinfo	https://www.ipa.go.jp/security/vuln/scap/cwe.html

ベンダー情報

No	Name	URL
Kernel.org git repositories
1	virtio_net: Fix napi_skb_cache_put warning (19ac6f2)	https://git.kernel.org/stable/c/19ac6f29bf64304ef04630c8ab56ecd2059d7aa1
2	virtio_net: Fix napi_skb_cache_put warning (468a729)	https://git.kernel.org/stable/c/468a729b78895893d0e580ceea49bed8ada2a2bd
3	virtio_net: Fix napi_skb_cache_put warning (6b5325f)	https://git.kernel.org/stable/c/6b5325f2457521bbece29499970c0117a648c620
4	virtio_net: Fix napi_skb_cache_put warning (842a97b)	https://git.kernel.org/stable/c/842a97b5e44f0c8a9fc356fe976e0e13ddcf7783
5	virtio_net: Fix napi_skb_cache_put warning (cc7340f)	https://git.kernel.org/stable/c/cc7340f18e45886121c131227985d64ef666012f
6	virtio_net: Fix napi_skb_cache_put warning (d3af435)	https://git.kernel.org/stable/c/d3af435e8ace119e58d8e21d3d2d6a4e7c4a4baa
7	virtio_net: Fix napi_skb_cache_put warning (f5e9a22)	https://git.kernel.org/stable/c/f5e9a22d19bb98a7e86034db85eb295e94187caa
8	virtio_net: Fix napi_skb_cache_put warning (f8321fa)	https://git.kernel.org/stable/c/f8321fa75102246d7415a6af441872f6637c93ab
Linux Kernel
9	Linux Kernel Archives	https://www.kernel.org

Change Log

No	Changed Details	Date of change
1	[2024年11月01日] 掲載	Nov. 1, 2024, 5:21 p.m.