| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-52806: ALSA: hda: Fix possible null-ptr-deref when assigning a stream |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ALSA: hda: Fix possible null-ptr-deref when assigning a stream |
| |
| While AudioDSP drivers assign streams exclusively of HOST or LINK type, |
| nothing blocks a user to attempt to assign a COUPLED stream. As |
| supplied substream instance may be a stub, what is the case when |
| code-loading, such scenario ends with null-ptr-deref. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52806 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.14.331 with commit 7de25112de8222fd20564769e6c99dc9f9738a0b |
| Fixed in 4.19.300 with commit 758c7733cb821041f5fd403b7b97c0b95d319323 |
| Fixed in 5.4.262 with commit 2527775616f3638f4fd54649eba8c7b84d5e4250 |
| Fixed in 5.10.202 with commit 25354bae4fc310c3928e8a42fda2d486f67745d7 |
| Fixed in 5.15.140 with commit 631a96e9eb4228ff75fce7e72d133ca81194797e |
| Fixed in 6.1.64 with commit 43b91df291c8802268ab3cfd8fccfdf135800ed4 |
| Fixed in 6.5.13 with commit fe7c1a0c2b25c82807cb46fc3aadbf2664a682b0 |
| Fixed in 6.6.3 with commit 4a320da7f7cbdab2098b103c47f45d5061f42edd |
| Fixed in 6.7 with commit f93dc90c2e8ed664985e366aa6459ac83cdab236 |
| |
| 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-2023-52806 |
| 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: |
| sound/hda/hdac_stream.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/7de25112de8222fd20564769e6c99dc9f9738a0b |
| https://git.kernel.org/stable/c/758c7733cb821041f5fd403b7b97c0b95d319323 |
| https://git.kernel.org/stable/c/2527775616f3638f4fd54649eba8c7b84d5e4250 |
| https://git.kernel.org/stable/c/25354bae4fc310c3928e8a42fda2d486f67745d7 |
| https://git.kernel.org/stable/c/631a96e9eb4228ff75fce7e72d133ca81194797e |
| https://git.kernel.org/stable/c/43b91df291c8802268ab3cfd8fccfdf135800ed4 |
| https://git.kernel.org/stable/c/fe7c1a0c2b25c82807cb46fc3aadbf2664a682b0 |
| https://git.kernel.org/stable/c/4a320da7f7cbdab2098b103c47f45d5061f42edd |
| https://git.kernel.org/stable/c/f93dc90c2e8ed664985e366aa6459ac83cdab236 |
