9.8

CVE-2024-40983: linux

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2024-40983DEBIAN-CVE-2024-40983
Published 12-07-2024Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2024-40983 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.88% chance of exploitation in the next 30 days, higher than 58.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.88%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 30 · Related 22
DLA-4008-1DSA-5730-1DSA-5731-1RHSA-2024:5928RHSA-2024:6267RHSA-2024:6268

Timeline

  1. 12-07-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: tipc: force a dst refcount before doing decryption As it says in commit 3bc07321ccc2 ("xfrm: Force a dst refcount before entering the xfrm type handlers"): "Crypto requests might return asynchronous. In this case we leave the rcu protected region, so force a refcount on the skb's destination entry before we enter the xfrm type input/output handlers." On TIPC decryption path it has the same problem, and skb_dst_force() should be called before doing decryption to avoid a possible crash. Shuang reported this issue when this warning is triggered: [] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug [] Workqueue: crypto cryptd_queue_worker [] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Call Trace: [] tipc_sk_mcast_rcv+0x548/0xea0 [tipc] [] tipc_rcv+0xcf5/0x1060 [tipc] [] tipc_aead_decrypt_done+0x215/0x2e0 [tipc] [] cryptd_aead_crypt+0xdb/0x190 [] cryptd_queue_worker+0xed/0x190 [] process_one_work+0x93d/0x17e0

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.88%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

0.00 pp

From 0.88% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.88%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu116 products
  • linux< 5.15.0-121.131 | < 6.8.0-44.44
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1069.75 | < 6.8.0-1015.16
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ fc1b6d6de2208774efd2a20bf0daddb02d18b1e0, < 3eb1b39627892c4e26cb0162b75725aa5fcc60c8 | ≥ fc1b6d6de2208774efd2a20bf0daddb02d18b1e0, < 692803b39a36e63ac73208e0a3769ae6a2f9bc76 | ≥ fc1b6d6de2208774efd2a20bf0daddb02d18b1e0, < 623c90d86a61e3780f682b32928af469c66ec4c2 | ≥ fc1b6d6de2208774efd2a20bf0daddb02d18b1e0, < b57a4a2dc8746cea58a922ebe31b6aa629d69d93 | ≥ fc1b6d6de2208774efd2a20bf0daddb02d18b1e0, < 6808b41371670c51feea14f63ade211e78100930 | ≥ fc1b6d6de2208774efd2a20bf0daddb02d18b1e0, < 2ebe8f840c7450ecbfca9d18ac92e9ce9155e269 | 5.5
  • linux_kernel≥ 5.5, < 5.10.221 | ≥ 5.11, < 5.15.162 | ≥ 5.16, < 6.1.96 | ≥ 6.2, < 6.6.36 | ≥ 6.7, < 6.9.7 | 6.10:rc1 | 6.10:rc2 | 6.10:rc3 | 6.10:rc4
Debian1 product
  • linux< 6.1.99-1 | < 6.9.7-1

3 vendors · 119 products

References

24 links
Show all 24 references