igb: Do not free q_vector unless new one was allocated

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernelbefore 4.9.337
• linux linux kernel4.10 and later · before 4.14.303
• linux linux kernel4.15 and later · before 4.19.270
• linux linux kernel4.20 and later · before 5.4.229
• linux linux kernel5.5 and later · before 5.10.163
• linux linux kernel5.11 and later · before 5.15.86
• linux linux kernel5.16 and later · before 6.0.16
• linux linux kernel6.1 and later · before 6.1.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 5be042b1917ddf444c20f4e12856535307b37c01, a0e26ed623a1e1460c1a191fbc0f37bddab7851a, f4b7f93cd34a6153d454a837708fd4203990d1ae, 4.3affected
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 64ca1969599857143e91aeec4440640656100803affected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 0200f0fbb11e359cc35af72ab10b2ec224e6f633affected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 68e8adbcaf7a8743e473343b38b9dad66e2ac6f3affected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before f96bd8adc8adde25390965a8c1ee81b73cb62075affected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 3cb18dea11196fb4a06f78294cec5e61985e1affaffected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 314f7092b27749bdde44c14095b5533afa2a3bc8affected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 6e399577bd397a517df4b938601108c63769ce0aaffected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 56483aecf6b22eb7dff6315b3a174688c6ad494caffected · git
  • 72ddef0506da852dc82f078f37ced8ef4d74a2bf and later · before 0668716506ca66f90d395f36ccdaebc3e0e84801affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now
• CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
  83Now

Published before and after this one in the same product

• ← EarlierCVE-2025-39804Sep 15, 2025 · lib/crypto: arm64/poly1305: Fix register corruption in no-SIMD contexts
  31Monitor
• ← EarlierCVE-2022-50241Sep 15, 2025 · NFSD: fix use-after-free on source server when doing inter-server copy
  31Monitor
• Later →CVE-2022-50255Sep 15, 2025 · tracing: Fix reading strings from synthetic events
  28Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.