Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: clear trailing padding in build_polexpire() build_expire() clears the trailing padding bytes of struct xfrm_user_expire after setting the hard field via memset_after(), but the analogous function build_polexpire() does not do this for struct xfrm_user_polexpire. The padding bytes after the __u8 hard field are left uninitialized from the heap allocation, and are then sent to userspace via netlink multicast to XFRMNLGRP_EXPIRE listeners, leaking kernel heap memory contents. Add the missing memset_after() call, matching build_expire().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a5127501c8d30b5728791b1e340284ca5c9cc4bdaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < e6f4ffe8596947a595c9544e73a73adcb0568b88affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ac6985903db047eaff54db929e4bf6b06782788eaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c221ed63a2769a0af8bd849dfe25740048f34ef4affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < eda30846ea54f8ed218468e5480c8305ca645e37affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b1dfd6b27df35ef4f87825aa5f607378d23ff0f2affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < e1af65c669ebb1666c54576614c01a7f9ffcfff6affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 71a98248c63c535eaa4d4c22f099b68d902006d0affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.169 to ≤ 6.1.*unaffected6.6.135 to ≤ 6.6.*unaffected6.12.82 to ≤ 6.12.*unaffected6.18.23 to ≤ 6.18.*unaffected6.19.13 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/a5127501c8d30b5728791b1e340284ca5c9cc4bd ↗
- https://git.kernel.org/stable/c/e6f4ffe8596947a595c9544e73a73adcb0568b88 ↗
- https://git.kernel.org/stable/c/ac6985903db047eaff54db929e4bf6b06782788e ↗
- https://git.kernel.org/stable/c/c221ed63a2769a0af8bd849dfe25740048f34ef4 ↗
- https://git.kernel.org/stable/c/eda30846ea54f8ed218468e5480c8305ca645e37 ↗
- https://git.kernel.org/stable/c/b1dfd6b27df35ef4f87825aa5f607378d23ff0f2 ↗
- https://git.kernel.org/stable/c/e1af65c669ebb1666c54576614c01a7f9ffcfff6 ↗
- https://git.kernel.org/stable/c/71a98248c63c535eaa4d4c22f099b68d902006d0 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html ↗