| 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-2023-52653: SUNRPC: fix a memleak in gss_import_v2_context |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| SUNRPC: fix a memleak in gss_import_v2_context |
| |
| The ctx->mech_used.data allocated by kmemdup is not freed in neither |
| gss_import_v2_context nor it only caller gss_krb5_import_sec_context, |
| which frees ctx on error. |
| |
| Thus, this patch reform the last call of gss_import_v2_context to the |
| gss_krb5_import_ctx_v2, preventing the memleak while keepping the return |
| formation. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52653 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.35 with commit 47d84807762966c3611c38adecec6ea703ddda7a and fixed in 6.6.23 with commit 99044c01ed5329e73651c054d8a4baacdbb1a27c |
| Issue introduced in 2.6.35 with commit 47d84807762966c3611c38adecec6ea703ddda7a and fixed in 6.7.11 with commit 47ac11db93e74ac49cd6c3fc69bcbc5964c4a8b4 |
| Issue introduced in 2.6.35 with commit 47d84807762966c3611c38adecec6ea703ddda7a and fixed in 6.8.2 with commit d111e30d9cd846bb368faf3637dc0f71fcbcf822 |
| Issue introduced in 2.6.35 with commit 47d84807762966c3611c38adecec6ea703ddda7a and fixed in 6.9 with commit e67b652d8e8591d3b1e569dbcdfcee15993e91fa |
| |
| 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-2023-52653 |
| 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/sunrpc/auth_gss/gss_krb5_mech.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/99044c01ed5329e73651c054d8a4baacdbb1a27c |
| https://git.kernel.org/stable/c/47ac11db93e74ac49cd6c3fc69bcbc5964c4a8b4 |
| https://git.kernel.org/stable/c/d111e30d9cd846bb368faf3637dc0f71fcbcf822 |
| https://git.kernel.org/stable/c/e67b652d8e8591d3b1e569dbcdfcee15993e91fa |
