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Message-ID: <2025072552-CVE-2025-38420-13a5@gregkh> Date: Fri, 25 Jul 2025 16:16:53 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-38420: wifi: carl9170: do not ping device which has failed to load firmware From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: do not ping device which has failed to load firmware Syzkaller reports [1, 2] crashes caused by an attempts to ping the device which has failed to load firmware. Since such a device doesn't pass 'ieee80211_register_hw()', an internal workqueue managed by 'ieee80211_queue_work()' is not yet created and an attempt to queue work on it causes null-ptr-deref. [1] https://syzkaller.appspot.com/bug?extid=9a4aec827829942045ff [2] https://syzkaller.appspot.com/bug?extid=0d8afba53e8fb2633217 The Linux kernel CVE team has assigned CVE-2025-38420 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 5.4.295 with commit 0140d3d37f0f1759d1fdedd854c7875a86e15f8d Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 5.10.239 with commit 8a3734a6f4c05fd24605148f21fb2066690d61b3 Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 5.15.186 with commit 527fad1ae32ffa2d4853a1425fe1c8dbb8c9744c Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 6.1.142 with commit bfeede26e97ce4a15a0b961118de4a0e28c9907a Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 6.6.95 with commit 4e9ab5c48ad5153cc908dd29abad0cd2a92951e4 Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 6.12.35 with commit 301268dbaac8e9013719e162a000202eac8054be Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 6.15.4 with commit 11ef72b3312752c2ff92f3c1e64912be3228ed36 Issue introduced in 2.6.38 with commit e4a668c59080f862af3ecc28b359533027cbe434 and fixed in 6.16-rc3 with commit 15d25307692312cec4b57052da73387f91a2e870 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-2025-38420 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: drivers/net/wireless/ath/carl9170/usb.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/0140d3d37f0f1759d1fdedd854c7875a86e15f8d https://git.kernel.org/stable/c/8a3734a6f4c05fd24605148f21fb2066690d61b3 https://git.kernel.org/stable/c/527fad1ae32ffa2d4853a1425fe1c8dbb8c9744c https://git.kernel.org/stable/c/bfeede26e97ce4a15a0b961118de4a0e28c9907a https://git.kernel.org/stable/c/4e9ab5c48ad5153cc908dd29abad0cd2a92951e4 https://git.kernel.org/stable/c/301268dbaac8e9013719e162a000202eac8054be https://git.kernel.org/stable/c/11ef72b3312752c2ff92f3c1e64912be3228ed36 https://git.kernel.org/stable/c/15d25307692312cec4b57052da73387f91a2e870
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