CASCACascade Atlas

Evidence dossier

CVE-2024-36971

net: fix __dst_negative_advice() race

62.8–77.8Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

In the Linux kernel, the following vulnerability has been resolved: net: fix __dst_negative_advice() race __dst_negative_advice() does not enforce proper RCU rules when sk->dst_cache must be cleared, leading to possible UAF. RCU rules are that we must first clear sk->sk_dst_cache, then call dst_release(old_dst). Note that sk_dst_reset(sk) is implementing this protocol correctly, while __dst_negative_advice() uses the wrong order. Given that ip6_negative_advice() has special logic against RTF_CACHE, this means each of the three ->negative_advice() existing methods must perform the sk_dst_reset() themselves. Note the check against NULL dst is centralized in __dst_negative_advice(), there is no need to duplicate it in various callbacks. Many thanks to Clement Lecigne for tracking this issue. This old bug became visible after the blamed commit, using UDP sockets.

State
PUBLISHED
Published
Jun 10, 2024
Updated
May 11, 2026
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

FIRST EPSS2.70%

2026-07-18 · v2026.06.15 · percentile 84.3%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

Linuxoriginal assertion
container

net: fix __dst_negative_advice() race

CISA KEVoriginal assertion
observed_exploitation

Android Kernel Remote Code Execution Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.027010000000; percentile 0.842590000000

Applicability

Cited product scope

Trace impact →
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "4.6"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "affected", "version": "a87cb3e48ee8", "lessThan": "051c0bde9f04", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "db0082825037", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "2295a7ef5c8c", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "eacb8b195579", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "81dd3c82a456", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "5af198c38712", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "b8af8e6118a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee8", "lessThan": "92f1655aa2b2", "versionType": "git"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "0", "lessThan": "4.6", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "4.19.316", "lessThan": "4.20", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "5.4.278", "lessThan": "5.5", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "5.10.219", "lessThan": "5.11", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "5.15.161", "lessThan": "5.16", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "6.1.94", "lessThan": "6.2", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "6.6.34", "lessThan": "6.7", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "6.9.4", "lessThan": "6.10", "versionType": "custom"}]unknown
linuxlinux_kernel
[{"status": "unaffected", "version": "6.10", "versionType": "custom", "lessThanOrEqual": "*"}]unknown
LinuxLinux
[{"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "051c0bde9f0450a2ec3d62a86d2a0d2fad117f13", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "db0082825037794c5dba9959c9de13ca34cc5e72", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "2295a7ef5c8c49241bff769e7826ef2582e532a6", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "eacb8b195579c174a6d3e12a9690b206eb7f28cf", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "81dd3c82a456b0015461754be7cb2693991421b4", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "5af198c387128a9d2ddd620b0f0803564a4d4508", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "b8af8e6118a6605f0e495a58d591ca94a85a50fc", "versionType": "git"}, {"status": "affected", "version": "a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314", "lessThan": "92f1655aa2b2294d0b49925f3b875a634bd3b59e", "versionType": "git"}]unknown
LinuxLinux
[{"status": "affected", "version": "4.6"}, {"status": "unaffected", "version": "0", "lessThan": "4.6", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.316", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.278", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.219", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.161", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.94", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.34", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.9.4", "versionType": "semver", "lessThanOrEqual": "6.9.*"}, {"status": "unaffected", "version": "6.10", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}]unknown
Unknown vendorUnknown product
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 4.6; end excluding 4.19.316supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 4.20; end excluding 5.4.278supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 5.5; end excluding 5.10.219supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 5.11; end excluding 5.15.161supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 5.16; end excluding 6.1.94supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 6.2; end excluding 6.6.34supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 6.7; end excluding 6.9.4supported

Assessments

CVSS by origin

7.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.