Incorrect Bitwise Shift of Integer The advisory has been revoked - it doesn't affect any version of package kernel-rt-debug-modules-internal (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS8-KERNELRTDEBUGMODULESINTERNAL-18182144
- published22 Jul 2026
- disclosed19 Jul 2026
Introduced: 19 Jul 2026
NewCVE-2026-64006 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-modules-internal package and not the kernel-rt-debug-modules-internal package as distributed by Centos.
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: fix dst corruption in same register operation
For lshift and rshift, the shift operations are performed in a loop over 32-bit words. The loop calculates the shifted value and write it to dst, and then immediately reads from src to calculate the carry for the next iteration. Because src and dst could point to the same memory location, the carry is incorrectly calculated using the newly modified dst value instead of the original src value.
Adding a temporary local variable to cache the original value before writing to dst and using it for the carry calculation solves the problem. In addition, partial overlap is rejected from control plane for all kind of operations including byteorder. This was tested with the following bytecode:
table test_table ip flags 0 use 1 handle 1 ip test_table test_chain use 3 type filter hook input prio 0 policy accept packets 0 bytes 0 flags 1 ip test_table test_chain 2 [ immediate reg 1 0x44332211 0x88776655 ] [ bitwise reg 1 = ( reg 1 << 0x08000000 ) ] [ cmp eq reg 1 0x66443322 0x00887766 ] [ counter pkts 0 bytes 0 ] ip test_table test_chain 4 3 [ immediate reg 1 0x44332211 0x88776655 ] [ bitwise reg 1 = ( reg 1 << 0x08000000 ) ] [ cmp eq reg 1 0x55443322 0x00887766 ] [ counter pkts 21794 bytes 1917798 ]
References
- https://access.redhat.com/security/cve/CVE-2026-64006
- https://git.kernel.org/stable/c/18014147d3ee7831dce53fe65d7fc8d428b02552
- https://git.kernel.org/stable/c/96bea2a7baac4a1137c188dc7610184487ab30a7
- https://git.kernel.org/stable/c/a391afe74398b70107f111aa731eab608624949d
- https://git.kernel.org/stable/c/b80ef316e978de2ef81d5bee9c19800b4cf96fb8