| 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-2023-52502: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() |
| |
| Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. |
| |
| Getting a reference on the socket found in a lookup while |
| holding a lock should happen before releasing the lock. |
| |
| nfc_llcp_sock_get_sn() has a similar problem. |
| |
| Finally nfc_llcp_recv_snl() needs to make sure the socket |
| found by nfc_llcp_sock_from_sn() does not disappear. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52502 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.6 with commit 8f50020ed9b81ba909ce9573f9d05263cdebf502 and fixed in 4.19.297 with commit e863f5720a5680e50c4cecf12424d7cc31b3eb0a |
| Issue introduced in 3.6 with commit 8f50020ed9b81ba909ce9573f9d05263cdebf502 and fixed in 5.4.259 with commit 7adcf014bda16cdbf804af5c164d94d5d025db2d |
| Issue introduced in 3.6 with commit 8f50020ed9b81ba909ce9573f9d05263cdebf502 and fixed in 5.10.199 with commit 6ac22ecdaad2ecc662048f8c6b0ceb1ca0699ef9 |
| Issue introduced in 3.6 with commit 8f50020ed9b81ba909ce9573f9d05263cdebf502 and fixed in 5.15.136 with commit d888d3f70b0de32b4f51534175f039ddab15eef8 |
| Issue introduced in 3.6 with commit 8f50020ed9b81ba909ce9573f9d05263cdebf502 and fixed in 6.1.59 with commit e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc |
| Issue introduced in 3.6 with commit 8f50020ed9b81ba909ce9573f9d05263cdebf502 and fixed in 6.5.8 with commit d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c |
| Issue introduced in 3.6 with commit 8f50020ed9b81ba909ce9573f9d05263cdebf502 and fixed in 6.6 with commit 31c07dffafce914c1d1543c135382a11ff058d93 |
| |
| 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-2023-52502 |
| 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: |
| net/nfc/llcp_core.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/e863f5720a5680e50c4cecf12424d7cc31b3eb0a |
| https://git.kernel.org/stable/c/7adcf014bda16cdbf804af5c164d94d5d025db2d |
| https://git.kernel.org/stable/c/6ac22ecdaad2ecc662048f8c6b0ceb1ca0699ef9 |
| https://git.kernel.org/stable/c/d888d3f70b0de32b4f51534175f039ddab15eef8 |
| https://git.kernel.org/stable/c/e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc |
| https://git.kernel.org/stable/c/d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c |
| https://git.kernel.org/stable/c/31c07dffafce914c1d1543c135382a11ff058d93 |
