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Message-ID: <2024102108-CVE-2024-47738-3f0e@gregkh> Date: Mon, 21 Oct 2024 14:16:17 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-47738: wifi: mac80211: don't use rate mask for offchannel TX either Description =========== In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't use rate mask for offchannel TX either Like the commit ab9177d83c04 ("wifi: mac80211: don't use rate mask for scanning"), ignore incorrect settings to avoid no supported rate warning reported by syzbot. The syzbot did bisect and found cause is commit 9df66d5b9f45 ("cfg80211: fix default HE tx bitrate mask in 2G band"), which however corrects bitmask of HE MCS and recognizes correctly settings of empty legacy rate plus HE MCS rate instead of returning -EINVAL. As suggestions [1], follow the change of SCAN TX to consider this case of offchannel TX as well. [1] https://lore.kernel.org/linux-wireless/6ab2dc9c3afe753ca6fdcdd1421e7a1f47e87b84.camel@sipsolutions.net/T/#m2ac2a6d2be06a37c9c47a3d8a44b4f647ed4f024 The Linux kernel CVE team has assigned CVE-2024-47738 to this issue. Affected and fixed versions =========================== Issue introduced in 5.14 with commit 9df66d5b9f45 and fixed in 6.1.113 with commit aafca50e71dc Issue introduced in 5.14 with commit 9df66d5b9f45 and fixed in 6.6.54 with commit d54455a3a965 Issue introduced in 5.14 with commit 9df66d5b9f45 and fixed in 6.10.13 with commit 3565ef215101 Issue introduced in 5.14 with commit 9df66d5b9f45 and fixed in 6.11.2 with commit 43897111481b Issue introduced in 5.14 with commit 9df66d5b9f45 and fixed in 6.12-rc1 with commit e7a7ef9a0742 Issue introduced in 5.10.51 with commit 1b728869a134 Issue introduced in 5.12.18 with commit ccedf8163fa6 Issue introduced in 5.13.3 with commit 5924678a442d Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2024-47738 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: include/net/mac80211.h net/mac80211/offchannel.c net/mac80211/rate.c net/mac80211/scan.c net/mac80211/tx.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/aafca50e71dc8f3192a5bfb325135a7908f3ef9e https://git.kernel.org/stable/c/d54455a3a965feb547711aff7afd2ca5deadb99c https://git.kernel.org/stable/c/3565ef215101ffadb5fe5394c70b1fca51376b25 https://git.kernel.org/stable/c/43897111481b679508711d3ca881c4c6593e9247 https://git.kernel.org/stable/c/e7a7ef9a0742dbd0818d5b15fba2c5313ace765b
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