5.5

CVE-2024-42141: Bluetooth: ISO: Check socket flag instead of hcon

Analyzed
AliasesUBUNTU-CVE-2024-42141DEBIAN-CVE-2024-42141
Published 30-07-2024Last modified 23-05-2026

Vulnerability summary

CVE-2024-42141 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 18 · Related 15
MGASA-2024-0277MGASA-2024-0278RHSA-2024:9315SUSE-SU-2024:3194-1SUSE-SU-2024:3195-1SUSE-SU-2024:3383-1

Timeline

  1. 30-07-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Check socket flag instead of hcon This fixes the following Smatch static checker warning: net/bluetooth/iso.c:1364 iso_sock_recvmsg() error: we previously assumed 'pi->conn->hcon' could be null (line 1359) net/bluetooth/iso.c 1347 static int iso_sock_recvmsg(struct socket *sock, struct msghdr *msg, 1348 size_t len, int flags) 1349 { 1350 struct sock *sk = sock->sk; 1351 struct iso_pinfo *pi = iso_pi(sk); 1352 1353 BT_DBG("sk %p", sk); 1354 1355 if (test_and_clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { 1356 lock_sock(sk); 1357 switch (sk->sk_state) { 1358 case BT_CONNECT2: 1359 if (pi->conn->hcon && ^^^^^^^^^^^^^^ If ->hcon is NULL 1360 test_bit(HCI_CONN_PA_SYNC, &pi->conn->hcon->flags)) { 1361 iso_conn_big_sync(sk); 1362 sk->sk_state = BT_LISTEN; 1363 } else { --> 1364 iso_conn_defer_accept(pi->conn->hcon); ^^^^^^^^^^^^^^ then we're toast 1365 sk->sk_state = BT_CONFIG; 1366 } 1367 release_sock(sk); 1368 return 0; 1369 case BT_CONNECTED: 1370 if (test_bit(BT_SK_PA_SYNC,

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu93 products
  • linux< 6.8.0-48.48
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1018.20
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ fbdc4bc47268953c80853489f696e02d61f9a2c6, < 045669710464a21c67e690ef14698fd71857cb11 | ≥ fbdc4bc47268953c80853489f696e02d61f9a2c6, < 33fabef489169c6db87843ef23351ed0d5e51ad8 | ≥ fbdc4bc47268953c80853489f696e02d61f9a2c6, < 596b6f081336e77764ca35cfeab66d0fcdbe544e | c03a10bd5b6ccb22921e04bcddc987410df7e7a9 | ≥ 6.5.12, < 6.6 | 6.6
  • linux_kernel≥ 6.5.12, < 6.6 | ≥ 6.6, < 6.6.39 | ≥ 6.7, < 6.9.9 | 6.10:rc1 | 6.10:rc2 | 6.10:rc3 | 6.10:rc4 | 6.10:rc5 | 6.10:rc6
Debian1 product
  • linux< 6.9.9-1

3 vendors · 96 products

References

17 links
Show all 17 references