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| -rw-r--r-- | NEWS | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/NEWS b/NEWS index a660fc59a8..7d0ca3f520 100644 --- a/NEWS +++ b/NEWS @@ -31,6 +31,18 @@ Major new features: pthread_attr_getsigmask_np have been added. They allow applications to specify the signal mask of a thread created with pthread_create. +* AArch64 now supports standard branch protection security hardening + in glibc when it is built with a GCC that is configured with + --enable-standard-branch-protection. This includes branch target + identification (BTI) and pointer authentication for return addresses + (PAC-RET). They require armv8.5-a and armv8.3-a architecture + extensions respectively for the protection to be effective, + otherwise the used instructions are nops. User code can use PAC-RET + without libc support, but BTI requires a libc that is built with BTI + support, otherwise runtime objects linked into user code will not be + BTI compatible. It is recommended to use GCC 10 or newer when + building glibc with branch protection. + Deprecated and removed features, and other changes affecting compatibility: * The deprecated <sys/sysctl.h> header and the sysctl function have been |