| 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-2021-47442: NFC: digital: fix possible memory leak in digital_in_send_sdd_req() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| NFC: digital: fix possible memory leak in digital_in_send_sdd_req() |
| |
| 'skb' is allocated in digital_in_send_sdd_req(), but not free when |
| digital_in_send_cmd() failed, which will cause memory leak. Fix it |
| by freeing 'skb' if digital_in_send_cmd() return failed. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47442 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 4.4.290 with commit 74569c78aa84f8c958f1334b465bc530906ec99a |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 4.9.288 with commit 88c890b0b9a1fb9fcd01c61ada515e8b636c34f9 |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 4.14.252 with commit fcce6e5255474ca33c27dda0cdf9bf5087278873 |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 4.19.213 with commit 071bdef36391958c89af5fa2172f691b31baa212 |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 5.4.155 with commit 2bde4aca56db9fe25405d39ddb062531493a65db |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 5.10.75 with commit 50cb95487c265187289810addec5093d4fed8329 |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 5.14.14 with commit 6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e86 |
| Issue introduced in 3.13 with commit 2c66daecc4092e6049673c281b2e6f0d5e59a94c and fixed in 5.15 with commit 291c932fc3692e4d211a445ba8aa35663831bac7 |
| |
| 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-2021-47442 |
| 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/digital_technology.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/74569c78aa84f8c958f1334b465bc530906ec99a |
| https://git.kernel.org/stable/c/88c890b0b9a1fb9fcd01c61ada515e8b636c34f9 |
| https://git.kernel.org/stable/c/fcce6e5255474ca33c27dda0cdf9bf5087278873 |
| https://git.kernel.org/stable/c/071bdef36391958c89af5fa2172f691b31baa212 |
| https://git.kernel.org/stable/c/2bde4aca56db9fe25405d39ddb062531493a65db |
| https://git.kernel.org/stable/c/50cb95487c265187289810addec5093d4fed8329 |
| https://git.kernel.org/stable/c/6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e86 |
| https://git.kernel.org/stable/c/291c932fc3692e4d211a445ba8aa35663831bac7 |
