Bugzilla – Bug 1226750
VUL-0: CVE-2024-38586: kernel: r8169: Fix possible ring buffer corruption on fragmented Tx packets.
Last modified: 2024-07-17 12:29:57 UTC
In the Linux kernel, the following vulnerability has been resolved: r8169: Fix possible ring buffer corruption on fragmented Tx packets. An issue was found on the RTL8125b when transmitting small fragmented packets, whereby invalid entries were inserted into the transmit ring buffer, subsequently leading to calls to dma_unmap_single() with a null address. This was caused by rtl8169_start_xmit() not noticing changes to nr_frags which may occur when small packets are padded (to work around hardware quirks) in rtl8169_tso_csum_v2(). To fix this, postpone inspecting nr_frags until after any padding has been applied. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-38586 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-38586.mbox https://git.kernel.org/stable/c/b6d21cf40de103d63ae78551098a7c06af8c98dd https://git.kernel.org/stable/c/0c48185a95309556725f818b82120bb74e9c627d https://git.kernel.org/stable/c/68222d7b4b72aa321135cd453dac37f00ec41fd1 https://git.kernel.org/stable/c/078d5b7500d70af2de6b38e226b03f0b932026a6 https://git.kernel.org/stable/c/54e7a0d111240c92c0f02ceba6eb8f26bf6d6479 https://git.kernel.org/stable/c/c71e3a5cffd5309d7f84444df03d5b72600cc417 https://www.cve.org/CVERecord?id=CVE-2024-38586 https://bugzilla.redhat.com/show_bug.cgi?id=2293402