RDMA/siw: Add sendpage_ok() check to disable MSG_SPLICE_PAGES
Affects Linux kernel 5.3.0 up to 6.6.62 and 6.7.0 up to 6.11.9 when running iSER over the siw RDMA driver. Fixed in kernel 6.6.62 and 6.11.9.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Fix
- Fixed in 6.6.62, 6.11.9
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The Linux kernel's RDMA soft-iWARP driver (siw), used for RDMA transfers over ordinary TCP/IP networks, is affected. The flaw can trigger a kernel warning when iSER traffic sends slab-allocated memory pages through the network stack, which can disrupt or destabilize the system.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Add sendpage_ok() check to disable MSG_SPLICE_PAGES While running ISER over SIW, the initiator machine encounters a warning from skb_splice_from_iter() indicating that a slab page is being used in send_page. To address this, it is better to add a sendpage_ok() check within the driver itself, and if it returns 0, then MSG_SPLICE_PAGES flag should be disabled before entering the network stack. A similar issue has been discussed for NVMe in this thread: https://lore.kernel.org/all/20240530142417.146696-1-ofir.gal@volumez.com/ WARNING: CPU: 0 PID: 5342 at net/core/skbuff.c:7140 skb_splice_from_iter+0x173/0x320 Call Trace: tcp_sendmsg_locked+0x368/0xe40 siw_tx_hdt+0x695/0xa40 [siw] siw_qp_sq_process+0x102/0xb00 [siw] siw_sq_resume+0x39/0x110 [siw] siw_run_sq+0x74/0x160 [siw] kthread+0xd2/0x100 ret_from_fork+0x34/0x40 ret_from_fork_asm+0x1a/0x30
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.3
- KernelLinux
From 5.3.0 · fixed in 6.6.62; From 6.7.0 · fixed in 6.11.9
References 4
Questions about CVE-2024-53094
What does this mean?
While running iSER over the siw RDMA driver, the initiator machine encounters a warning. The fix adds a sendpage_ok() check that disables MSG_SPLICE_PAGES in that path.Source: git.kernel.org
Am I affected, and how do I check?
Kernels from 5.3.0 up to 6.6.62 and from 6.7.0 up to 6.11.9 are listed as affected, but only when iSER runs over the siw driver. To check the kernel version, run uname -r.Source: git.kernel.org
What should I do about it?
Upgrade to kernel 6.6.62 or 6.11.9, or a later release from the same branch.Source: git.kernel.org
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data