7.8

CVE-2024-26748: linux Double Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2024-26748DEBIAN-CVE-2024-26748
Published 03-04-2024Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2024-26748 is a high (CVSS 7.8) Double Free vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
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 22 · Related 20
DLA-3842-1DSA-5681-1SUSE-SU-2024:2008-1SUSE-SU-2024:2019-1SUSE-SU-2024:2190-1USN-6820-1

Timeline

  1. 03-04-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: fix memory double free when handle zero packet 829 if (request->complete) { 830 spin_unlock(&priv_dev->lock); 831 usb_gadget_giveback_request(&priv_ep->endpoint, 832 request); 833 spin_lock(&priv_dev->lock); 834 } 835 836 if (request->buf == priv_dev->zlp_buf) 837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request); Driver append an additional zero packet request when queue a packet, which length mod max packet size is 0. When transfer complete, run to line 831, usb_gadget_giveback_request() will free this requestion. 836 condition is true, so cdns3_gadget_ep_free_request() free this request again. Log: [ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.140696][ T150] [ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36): [ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3] Add check at line 829, skip call usb_gadget_giveback_request() if it is additional zero length packet request. Needn't call usb_gadget_giveback_request() because it is allocated in this driver.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.24%

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

Affected systems

Ubuntu112 products
  • linux< 5.4.0-186.206 | < 5.15.0-112.122
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1126.136 | < 5.15.0-1063.69
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 7733f6c32e36ff9d7adadf40001039bf219b1cbe, < aad6132ae6e4809e375431f8defd1521985e44e7 | ≥ 7733f6c32e36ff9d7adadf40001039bf219b1cbe, < 1e204a8e9eb514e22a6567fb340ebb47df3f3a48 | ≥ 7733f6c32e36ff9d7adadf40001039bf219b1cbe, < 3a2a909942b5335b7ea66366d84261b3ed5f89c8 | ≥ 7733f6c32e36ff9d7adadf40001039bf219b1cbe, < 9a52b694b066f299d8b9800854a8503457a8b64c | ≥ 7733f6c32e36ff9d7adadf40001039bf219b1cbe, < 70e8038813f9d3e72df966748ebbc40efe466019 | ≥ 7733f6c32e36ff9d7adadf40001039bf219b1cbe, < 92d20406a3d4ff3e8be667c79209dc9ed31df5b3 | ≥ 7733f6c32e36ff9d7adadf40001039bf219b1cbe, < 5fd9e45f1ebcd57181358af28506e8a661a260b3 | 5.4
  • linux_kernel≥ 5.4, < 5.4.270 | ≥ 5.5, < 5.10.211 | ≥ 5.11, < 5.15.150 | ≥ 5.16, < 6.1.80 | ≥ 6.2, < 6.6.19 | ≥ 6.7, < 6.7.7 | 6.8:rc1 | 6.8:rc2 | 6.8:rc3 | 6.8:rc4 | 6.8:rc5
Debian1 product
  • linux< 6.1.82-1 | < 6.7.7-1

3 vendors · 115 products

References

29 links
Show all 29 references