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CVE-2024-27396net: gtp: Fix Use-After-Free in gtp_dellink

Description

In the Linux kernel, the following vulnerability has been resolved: net: gtp: Fix Use-After-Free in gtp_dellink Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal of gtp_dellink, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free. To prevent this, it should be changed to hlist_for_each_entry_safe.

Timeline

  1. ID reserved

    By Linux

  2. · 2 months later

    Published

  3. · 2 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-27396, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.24% · top 84% of all CVEs (15 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

  • Linux · Linux

    • affected 043a283d24f40fea4c8a8d06b0e2694c8e372200 – < 07b20d0a3dc13fb1adff10b60021a4924498da58
    • affected c185e1d6e2752a4b656c3ca878c525fa11f55757 – < 718df1bc226c383dd803397d7f5d95557eb81ac7
    • affected 94dc550a5062030569d4aa76e10e50c8fc001930 – < 0caff3e6390f840666b8dc1ecebf985c2ef3f1dd
    • affected 94dc550a5062030569d4aa76e10e50c8fc001930 – < 2e74b3fd6bf542349758f283676dff3660327c07
    • affected 94dc550a5062030569d4aa76e10e50c8fc001930 – < 25a1c2d4b1fcf938356a9688a96a6456abd44b29
    • affected 94dc550a5062030569d4aa76e10e50c8fc001930 – < 2aacd4de45477582993f8a8abb9505a06426bfb6
    • affected 94dc550a5062030569d4aa76e10e50c8fc001930 – < cd957d1716ec979d8f5bf38fc659aeb9fdaa2474
    • affected 94dc550a5062030569d4aa76e10e50c8fc001930 – < f2a904107ee2b647bb7794a1a82b67740d7c8a64
    • affected a29c4303930bc0c25ae6a4f365dcdef71447b4ea
    • affected 4.19.93 – < 4.19.313
    • affected 5.4.8 – < 5.4.275
    • affected 4.14.162 – < 4.15

  • Linux · Linux

    • affected 5.5
    • unaffected < 5.5
    • unaffected 4.19.313 – ≤ 4.19.*
    • unaffected 5.4.275 – ≤ 5.4.*
    • unaffected 5.10.216 – ≤ 5.10.*
    • unaffected 5.15.158 – ≤ 5.15.*
    • unaffected 6.1.90 – ≤ 6.1.*
    • unaffected 6.6.30 – ≤ 6.6.*
    • unaffected 6.8.9 – ≤ 6.8.*
    • unaffected 6.9 – ≤ *

References

References12

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .