| 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-2021-47518: nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done |
| |
| The done() netlink callback nfc_genl_dump_ses_done() should check if |
| received argument is non-NULL, because its allocation could fail earlier |
| in dumpit() (nfc_genl_dump_ses()). |
| |
| The Linux kernel CVE team has assigned CVE-2021-47518 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 4.4.295 with commit 87cdb8789c38e44ae5454aafe277997c950d00ed |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 4.9.293 with commit 69bb79a8f5bb9f436b6f1434ca9742591b7bbe18 |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 4.14.258 with commit 811a7576747760bcaf60502f096d1e6e91d566fa |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 4.19.221 with commit 3b861a40325eac9c4c13b6c53874ad90617e944d |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 5.4.165 with commit 48fcd08fdbe05e35b650a252ec2a2d96057a1c7a |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 5.10.85 with commit 83ea620a1be840bf05089a5061fb8323ca42f38c |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 5.15.8 with commit fae9705d281091254d4a81fa2da9d22346097dca |
| Issue introduced in 3.12 with commit ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 and fixed in 5.16 with commit 4cd8371a234d051f9c9557fcbb1f8c523b1c0d10 |
| |
| 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-2021-47518 |
| 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/netlink.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/87cdb8789c38e44ae5454aafe277997c950d00ed |
| https://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18 |
| https://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566fa |
| https://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944d |
| https://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7a |
| https://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38c |
| https://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dca |
| https://git.kernel.org/stable/c/4cd8371a234d051f9c9557fcbb1f8c523b1c0d10 |
