bpf: fix recursive lock when verdict program return SK_PASS

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-56694
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-12-28 10:15:15 UTC
Updated2026-08-04 11:22:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf: fix recursive lock when verdict program return SK_PASS When the stream_verdict program returns SK_PASS, it places the received skb into its own receive queue, but a recursive lock eventually occurs, leading to an operating system deadlock. This issue has been present since v6.9. ''' sk_psock_strp_data_ready write_lock_bh(&sk->sk_callback_lock) strp_data_ready strp_read_sock read_sock -> tcp_read_sock strp_recv cb.rcv_msg -> sk_psock_strp_read # now stream_verdict return SK_PASS without peer sock assign __SK_PASS = sk_psock_map_verd(SK_PASS, NULL) sk_psock_verdict_apply sk_psock_skb_ingress_self sk_psock_skb_ingress_enqueue sk_psock_data_ready read_lock_bh(&sk->sk_callback_lock) <= dead lock ''' This topic has been discussed before, but it has not been fixed. Previous discussion: https://lore.kernel.org/all/[email protected]

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-667

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c0809c128dad4c3413818384eb06a341633db973 221109ba2127eabd0aa64718543638b58b15df56 git Not specified
CNA Linux Linux affected 5965bc7535fb87510b724e5465ccc1a1cf00916d 6694f7acd625ed854bf6342926e771d65dad7f69 git Not specified
CNA Linux Linux affected 39dc9e1442385d6e9be0b6491ee488dddd55ae27 386efa339e08563dd33e83bc951aea5d407fe578 git Not specified
CNA Linux Linux affected b397a0ab8582c533ec0c6b732392f141fc364f87 da2bc8a0c8f3ac66fdf980fc59936f851a083561 git Not specified
CNA Linux Linux affected 6648e613226e18897231ab5e42ffc29e63fa3365 01f1b88acfd79103da0610b45471f6c88ea98d72 git Not specified
CNA Linux Linux affected 6648e613226e18897231ab5e42ffc29e63fa3365 f84c5ef6ca23cc2f72f3b830d74f67944684bb05 git Not specified
CNA Linux Linux affected 6648e613226e18897231ab5e42ffc29e63fa3365 8ca2a1eeadf09862190b2810697702d803ceef2d git Not specified
CNA Linux Linux affected 772d5729b5ff0df0d37b32db600ce635b2172f80 git Not specified
CNA Linux Linux affected 5.10.223 5.10.233 semver Not specified
CNA Linux Linux affected 5.15.159 5.15.174 semver Not specified
CNA Linux Linux affected 6.1.91 6.1.120 semver Not specified
CNA Linux Linux affected 6.6.31 6.6.64 semver Not specified
CNA Linux Linux affected 6.8.10 6.9 semver Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 5.10.233 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.174 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.120 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.64 6.6.* semver Not specified
CNA Linux Linux unaffected 6.11.11 6.11.* semver Not specified
CNA Linux Linux unaffected 6.12.2 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/03/msg00002.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/6694f7acd625ed854bf6342926e771d65dad7f69 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f84c5ef6ca23cc2f72f3b830d74f67944684bb05 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/386efa339e08563dd33e83bc951aea5d407fe578 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/da2bc8a0c8f3ac66fdf980fc59936f851a083561 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/03/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/01f1b88acfd79103da0610b45471f6c88ea98d72 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8ca2a1eeadf09862190b2810697702d803ceef2d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/221109ba2127eabd0aa64718543638b58b15df56 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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